Edible Rock Activity with Mini Unit Study

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Whether your kids are new to geology or are already budding rockhounds, these easy lesson ideas are sure to pique their interest and and excitement to your homeschool science lessons.

Rocks: Science Facts

Start by reading The Magic School Bus Inside the Earth (part of BookShark Science 2 for ages 7-9). Then use these rock facts as a springboard for more research.

  • The 3 layers of earth are the crust, the mantle, and the core.
  • Rocks are made up of minerals
  • A mineral is a naturally occurring inorganic (not plant or animal) solid.
  • Rocks come in many different shapes and colors.
  • The characteristics of a rock gives a clue as to where it was formed.
  • Igneous, sedimentary and metamorphic are the 3 main types of rocks.

Read about the everyday uses of rocks and minerals and watch this video about types of rocks.

Rocks: Vocabulary

Using a science book such as The Usborne Encyclopedia of Planet Earth as a reference, have your children define or illustrate these vocabulary words related to rocks.

  • Geology
  • Erosion
  • Rock Cycle
  • Sediment
  • Hot Springs or Geysers

Rocks: Art Ideas

  1. A hot new trend is painting designs on rocks. Some people like to place these decorated rocks in public places to be found and enjoyed by others.
  2. Use rocks to design nature mosaics or collages with different colored pebbles and other finds from nature such as leaves and twigs.

Rocks: Writing and Research Prompts

Use these ideas for writing prompts or as research topics.

  • Do rocks float? Why or why not?
  • Look for rocks near your home. Wash them and then describe them in a short paragraph.
  • Describe conditions that could melt rocks.
  • List all the letters of the alphabet from A to Z. Then fill in rock/mineral names that start with each letter. Alternatively, you can include adjectives, nouns, or verbs related to rocks and geology.
  • What are the different rock layers found in the Grand Canyon?

Rocks: Hands-on Learning Activities

Here are two fun and easy hands-on ideas that can be done without spending too much money or time.

You only need two things for the first activity—sandpaper and a graham cracker.

Lightly rub the sandpaper against the graham cracker to notice the reshaping and “sediment” (crumbs). Explain to your children that by slight pressure applied over a long period of time, rocks are broken down into smaller pieces called sediment.

Next, to illustrate the how layers of sediment form rocks, prepare this fun and delicious edible sedimentary rock activity. It’s a lot like making rice krispies treats, so your children can easily make this with minimal adult supervision.



  • 3 cups each of crisp rice cereal and mini marshmallows
  • 4 tablespoons of butter + extra for greasing the pan
  • Butterfinger baking bits (or small candies)
  • chocolate chips
  • 8” disposable aluminum pan
  • spatula, saucepan and spoon for stirring.

Grease the pan well. Melt the butter over low heat and gradually add the marshmallows, stirring until they are melted. Optional: add a bit of vanilla and a pinch of salt.

Remove the melted marshmallows from the heat and fold in the crisp rice cereal. For the first layer, press half of the cereal and marshmallow mixture firmly into your greased pan.

Using a spatula, have your child pack it down firmly like the layers or strata of sedimentary rock.

For the second layer, sprinkle on the butterfinger baking bits.

Then, pack down the other half of the cereal and marshmallow mixture. Lastly, top with chocolate chips, pressing them into the still-warm and pliable cereal mixture.

Refrigerate for twenty or thirty minutes until firm. Slice into bars and enjoy.

It’s easy for your children to visualize the different strata or particles of sedimentary rocks in these desserts. As you munch on them, discuss what you’ve learned, using all of the proper vocabulary words.

With just a bit of planning on your part, these earth science activities will prepare your children to learn about the treasures of earth. They may even be inspired to start their own collection of rock treasures, diving deeper into an interest-led study of geology.

Pretty cool, huh?!  BookShark is a complete, literature-based, homeschool curriculum developed for Pre-K to Age 16 students. Our curriculum uses a variety of educational resources including literary fiction and nonfiction, biographies, illustrations and hands-on experiments to deliver an engaging and complete education that extends beyond textbook memorization.

Their curriculum is easy for parents to teach. All of the planning and preparation is done for you so you can enjoy learning together. They provide 36-week, 4-day schedules designed to save one day a week for sports, field trips or other extracurricular activities.

BookShark combines a proprietary History, Science and Language Arts offering with a wide range of math options, including Math-U-See, Teaching Textbooks, Saxon, Singapore, and more to ensure you have everything you need for an entire school year.



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This Post Has 183 Comments

  1. How fun! It’s hard to pick just one, but I know my son would love package 4. Thanks for the chance to win!

  2. I’d like to win this because it sounds like a fun way to incorporate science into our day! If I won, I would choose level 6; Chemistry, physics, and biology for ages 11-13.

  3. Science is hard to teach in my opinion. I love a good curriculum to guide me through it.
    I’d pick one of the packs with astronomy or meteorology.

  4. I always feel like I’m not a very good science teacher. I’d pick 4 or 6. Thanks for the chance.

  5. I am still looking for a science curriculum to use this year. We love books, hands-on activities, and free stuff! If I won, I would choose the K package to use with my 4 and 6 year olds.

  6. I would choose bookshark science 7.

  7. Would love to win this. The edible rock activity looks like a fun experiment to try (and eat).

  8. Looks like a great giveaway!

    1. I forgot to say, I would choose the science 1 pack!

  9. Ge always wanted to try Bookshark. My kids would love the robotics in Package 7

  10. I want to win this because it is literature based, and includes wonderful books. We would love to do package 7 this year.

  11. I would love to win this because I love literature based curriculum. I would love #4

  12. Science is the hardest for me to teach my 6 boys, so I would love to have this inclusive set. I would pick set 1 , 2 or 3.

  13. I have been eyeing Bookshark curriculum fo over a year now! I would absolutely love to win this! We would select the package 2.

  14. We have been using Bookshark for a few years and LOVE their literature based curriculum. We would love to win Level 4 or 5 Science!

  15. I would love to win this for my daughter. She would love the health one for ages 10-13.

  16. I would love to win package 3 for my 5 and 7 year olds!

  17. I would choose the upper level technology set.

  18. This looks like a fun and engaging curriculum. I would get the one that includes magnetism.

  19. This would be a great addition for our homeschool. I’m torn on the package I would want. I think I would go with 4. But I’m interested in 1-3 also. Lol.

  20. We enjoy Bookshark History and would love reading all the science literature in level 4!

  21. I would choose package 1. Looks so neat!

  22. I have heard really good things about this curriculum. Since we are doing biology this year, I would choose package 3

  23. We have struggled to find a science we love and this one sounds great. I like combining literature and science is always better hands on.

  24. Thank you for offering this giveaway! Science isn’t a subject that I am good at teaching, so anything that can help me is greatly appreciated! My son would probably pick either Level 4 or 7 (even though it is a little old for him right now), and my daughter would pick level 5, as she wants to be a nurse. Thank you again for having this!

  25. I would love to try Out Book Shark. My kids love science but I haven’t found a program we all like. I think we would love to try Package 1- all of my kids love animals!

  26. I would pick Science 5. We will be studying Anatomy this year:)

  27. Exciting science curriculum

  28. I would probably choose number 7. Thanks!

  29. I would love science 2!

  30. We have yet to find a science program our daughter enjoys. I’d love for her to give Science 5 a try. Thanks for the giveaway!

  31. Chemistry physics and biology would be great For our homeschool!

  32. I have some older kids and I would love to have a science package geared toward their age and interests. That is why I would choose the BookShark Science 7 Package: Conservation, Robotics, and Technology for ages 12-14.

  33. I would like to win this giveaway because it seems like such a fun interesting twist on science education. I would chose the K package for my daughter who will be starting Kindergarten.

  34. Would love package 6 (Conservation, Chemistry, & Physics). Thank you for the giveaway!

  35. This is amazing! My 8 year daughter would love any of this.

  36. Curriculum that includes all the materials make things so much easier for our busy family, and these topics look really interesting. We would love to try the Science 7 curriculum.

  37. I would love to win this because it would make my science planning so much easier. Now I spend hours finding books to line up with the lessons and since we have a small library, I have to request books from other libraries and that often takes a week or so and they never arrive together because they’re coming from multiple libraries, so we end up not having all the books we need for each topic. It’s hard to choose just one, but I would go with the Science 4 package because I think my kids would absolutely love doing those lessons this year.

  38. I have been struggling with finding a science curriculum and this looks awesome! My daughter needs more scientific inspiration and I could use some help in keeping up with her questions and interests!

  39. I would choose any of the packets that involve chemistry, physics or robotics as they are the areas of science I am not as strong in compared to biology, zoology, etc areas. So having something that would help me teach my children and assist me in reviewing concepts with my teen as needed would be fantastic.

  40. These look great! So often curriculum ends up dry, but these look like they would keep my boys’ interest with lots of interesting activities! It would be a hard choice – either the level 1 or 7. Thank you so much for the great giveaways!

  41. We enjoy learning science, especially anything to do with animals! 🙂

  42. We are currently deciding on curriculum so this would be perfect for us!

  43. I would choose the science 1 package.

  44. I have eyed BookShark for what seems like forever. Would love an opportunity to try out the Science 4 package.

  45. I would LOVE to win a package; I know my daughter would enjoy the hands-on experiments. I would choose Package K or Package 1 for my 6-year-old.

  46. I would love package 7 for my 13 year old!

  47. This is such a great giveaway! My boys LOVE science and I have been looking for an affordable curriculum to use! I am not sure which package I would choose, because they all sound amazing! Thanks for the chance to win! 🙂

  48. What a lot of wonderful information!

  49. We are all about hands-on learning in our home. This is the first I’ve heard about BookShark and they have so many interesting choices and activities! BookShark Science 1 Package: Animals, Astronomy, and Physics would be perfect for my 6 yr old as it relates not only to his interests, but also to his level. Thank you for this opportunity!

  50. Thank you for the edible rock activity – looks wonderful – and for the opportunity to win a Book Shark package.

  51. I like that this science is literature base and the interesting varieties of science to be studied. I would love to have the geology pack or the robotics pack.

  52. I always LOVED science growing up, especially when I was young and I would love to spread that gift on to my kids. I’d choose the Science K set!

  53. I would love to try the level 7.

  54. I would pick the Science 4 package. It look like the most fun for my boys.

  55. I think my girls would love package 3 or 7 but any of the packages sound awesome!

  56. I would love to win this giveaway because science is hardest for me to incorporate into our day. I would choose Science 1.

  57. Science is my weakest area. I would like Science package 1. It fits the grades of my oldest 2.

  58. This looks amazing. I’ve heard of Bookshark but I’ve never looked into it. We would love to win this. Thank you for the giveaway.

  59. Would love to win this. It is so expensive to find good science material for my small budget.

  60. They all look so fun. I don’t know which I would like best.

  61. Looks like an awesome curriculum. Thanks for the opportunity to win some science!

  62. We’ve used Sonlight science which we like so I’m sure we would like Bookshark also

  63. Thanks so much for the recipe! Also for the opportunity to win!! ?

  64. Nice one!

  65. I would be between levels 5 and 6 and I’d probably let the kids choose if we were fortunate to win.

  66. I would love to win this because we had so much fun using mystery science last year, with all the lessons planned out, I am a bit spoiled and really like that convenience! It would be hard to pick between packages 5, 6, and 7! I have three kids still at home ages 14, 12, and 10. The 14 year old is on his high school track and has science taken care of, so it would just be for the younger two.

  67. Bookshark Science 6 Package. I think my soon-to-be 11-year-old daughter would love that!

  68. Oh man! This looks amazing! This is definitely the curriculum that would best fit my child’s needs and learning style! It would keep us both entertained too ha ha! I would pick package 3 because which would be perfect because my daughter has a budding interest in all things rocks right now!

    1. oops! I meant package 2 🙂

  69. I would love to win this giveaway because ai have had my eye on bookshark since first decided to homeschool. I love the literature-based approach to learning and would be thrilled to begin our homeschooling journey with bookshark. If I won I would choose either K or 7. It would be a tough choice!

  70. I love the science 7 but if have to see what my kids would choose

  71. My kids would love this! We’d like either book pack 3 or 4.

  72. I’m new to homeschooling and would love the opportunity to try out this science curriculum!

  73. This would be wonderful! If I won I would choose package 7.

  74. This looks like such a fun science curriculum! I’d love the level 1 package!

  75. I still haven’t fully planned out what I’m teaching for science. I didn’t buy a boxed curriculum, just coming up with ideas on my own. I would love to win Package 1 as it seems to go along well with the things I wanted to teach my boys this year.

  76. This looks awesome.. I think this program could really capture my kids attention.. thanks for a chance.

  77. We love Bookshark and would Love Science 6 or 7!!

  78. Really interested in this giveaway! I like all the material and resources included very much. I’d love to win the Science 2 package and open it right up and go!

  79. We would love to have the Science Level 6! My son is moving up to that level this year!

  80. It would be a blessing to win the Science Level 3 Package. I’ve heard about BookShark in the past, but never had the honor of trying any of their curricula programs with my daughter (Age 9). I want to try BookShark, because it contains hands-on science experiments and activities which spark my daughter’s curiosity to l learn more. I appreciate that it is also literature-based too. The Level 3 Package contains several topics my daughter wanted to explore this year including Botany, Biology, Taxonomy, Human Anatomy, and more. We still need a Science curriculum for the new year and this one sounds perfect because the planning is done for me and includes many helpful resources making my job teaching this difficult subject easier.

    1. Thank you for the opportunity to win!

  81. Package number 2 or 7 sounds like they would interest my son.

  82. I would choose level 6 as it is what my eldest is really interested in at the moment.

  83. The areas I struggle in teaching science are chemistry and technology, so I would choose BookShark Science 6 or 7 Package for our school. I have never heard of BookShark before now, and love the comprehensive nature of the packages. Thank you for the opportunity!

  84. We are going to be studying Biology this year so #3 would be great for our homeschool.

  85. I have wanted to try out Bookshark for awhile and am always looking for good science curriculum. I would likely order #6. Thanks!!

  86. I would love to win because bookshark sounds like an awesome program. If I won we would love bookshark science 3! Thanks!

  87. Awesome kit!!

  88. I would pick Science 4. It looks so interesting!

  89. For me I would like package 7!!! My 13 yr old would love it!

  90. Oh man, this looks like a load of fun! Absolutely looking forward to this!

  91. I would love to win this because there are some concepts in science that I struggle with myself. I would choose pkg 6 for this reason.

  92. Science 6 and Science 7 both look great. My son loves both chemistry and robotics!

  93. That’s a hard one…I would pick either 2 or 5.

  94. I would love any of the first 3 packages! I home school my grandkids ages 7,7, and 6.

  95. I’d love package 5 for my son. I think he would really be interested in the books.

  96. I would pick package three because of the age group. Sounds like a fun, interactive way to teach science!

  97. Science is one of my favorite topics, I’m really excited about this contest! Thank you!

  98. Oops! I forgot to mention that we would get the most use out of Package 6. 🙂

  99. Sounds like a great deal!!

  100. I’d love to win the Science 7 package as my boys are very interested in Robotics and Technology.

  101. Our science curriculum needs some organization. I think I would choose the 4th package, although it’s hard to decide. Thanks!

  102. I do not have curriculum finalized for the year and we are on a tight budget. I love this preview and literature based curriculum.

  103. I would like to win package 7 as my son is right in the middle of the age range for that one. He is also interested in Robotics, so it would most likely be a good match.

  104. I would probably choose the Level 1 package 🙂

  105. BookShark Science package 3 would be our choice for my 11 year old. We are in need of a science curriculum! Thank you for having this giveaway!

  106. I would love to use this with my 2 sons. Of course having to choose one I’d probably choose level 6

  107. I would love to win this science curriculum because I have kids who love to read and research. This looks like just the ticket!

  108. So many great options. I’m not sure which one I would choose. Probably 1 or 7. 🙂

  109. This science curriculum looks really great. We would love to win a set to try out this company. We live overseas and have difficulty finding good activities to do for science.

  110. I love science! I was a scientist before children! But in the homeschool setting, even with a very active Pinterest account, ensuring enough STEAM is always a challenge. I hope to win package K,1, or 2 to align with the ages/needs of my bunch.

  111. My son absolutely loves science, so this would be perfect for him. I would probably pick Package #2 for 7-9 year olds.

  112. We are from Maine and live near the Swift River, Rocks are are thing. We are always bringing home rocks to explore and discover. Thank you for sharing this great idea to help the kiddos gain a better understanding of how they were created.

  113. Wow, these look like so much fun! I think I would choose grade 7….

  114. My son loves all thing solar/robots but I cannot get my daughter interested in science. I would love the 11-14 pack, so that they could do science together. Maybe his enthusiasm would rub of on her!

  115. I would love to win this giveaway to make science a little easier. It’s hard to choose, because I have 4 kids that range from preschool to third grade, but I think science 2 would allow my older 2 to work together. Thanks for hosting the giveaway and sharing the fun activity.

  116. Package 4 would be perfect for my 9 year old! He’s really interested in electricity and magnets.
    Thank you!

  117. We’ve got children ages 3-16 and really any package would be awesome to win! We love hands on experiences and reading. Really debating between 4, 6 and 7.

  118. We still haven’t settled on a science we love. Trying another something new this year. I’d go with either 1 or 3, I *think.* 🙂

  119. Oh, it’s so hard to decide! Probably K or 1 (or 2!). 🙂

  120. I would love to win the Biology unit. My kids would love that.

  121. Wold love to win science package 4. Book shark looks simple to teach and use, something I need right now 🙂

  122. I would love to win this for my science loving daughter. The 3rd grade program looks like a good fit for her.

  123. Science 7! Looks like fun!

  124. I’ve been so interested in Book Shark. Would love to give this a try.
    Thanks for the opportunity.

  125. I’m excited about this giveaway because we love science and are struggling a bit with finding the right curriculum. We’d want Science 4. Cool!

  126. I had never heard of Bookshark. It looks very cool. I would want a pack that was for a 10 year old

  127. I think this would be fun and engaging for my son. I’d probably choose science 4 with the astronomy. It’s one of my favorite topics and I’m eager to share it with my son.

  128. My son would love set 4. Looks great!

  129. My family loves reading and is always looking for books on many different subjects. The activity ideas are a bonus!
    It’s hard to choose just one, but I would say I would pick set #2.

  130. The science curriculum looks amazing. I think package 1 or 2.

  131. I am currently teaching 7 kids ranging from Kdg. to 12th grade, so it would be hard to choose! Maybe package 6? Thanks for the great resources!

  132. Would love the hands-on science options. I always end up creating my own units from scratch, so this would save me tons of time. The Science 1 pack covers what we’re planning to do in this next year.

  133. We love books and we love science! I’d choose either 2 or 4. 🙂

  134. It would be a hard choice between science 3 and 4.

  135. Help with science concepts is always appreciated! I would choose the Science 3 package since those are the subjects with which I am least comfortable.

  136. I love how everything is already put together for you. I would probably choose either 6 or 7.

  137. I would choose package 3, 4, or 6. They look great! My daughter loves science and these would be perfect.

  138. I love trying out new curriculum and would choose package 7.

  139. I would be thrilled to incorporate either BookShark Science 5 or 7 with my three children.

  140. They all look good! It would be hard to choose one!

  141. My children are older so I would choose #7

  142. I would love science package 1.

  143. Thanks for the awesome giveaway! I would go with the Science 7 package.

  144. I’d choose 5,6, or 7 due to my daughter’s age. 🙂

  145. This looks like so much fun – can’t decide which one but would have to go with either 2 or 3!

  146. What a great deal Science 2 would fit us perfectly for this upcoming year..

  147. We would choose Science K!

  148. My son would love this!

  149. Rocks Rock! This looks like a delightful geology lesson. I am eager to see what this curriculum is like for the Human Anatomy series!!!

  150. Thanks for doing this! How exciting.

  151. This is such a great giveaway!!

  152. I would love to get one of these packages because we haven’t really done science yet. I’m not sure which I’d pick… my kids are 8, 6, 4, 2, and 1… so… maybe something geared toward the 8 and 6 year olds? I’ll choose if I win. 🙂

  153. I would choose Science K or Science 3 package! What a great giveaway!

  154. I’ve heard good things about bookshark. Thanks for this sampling of their program and for the giveaway!

  155. I’d have to go with Science 1. ?

  156. I would choose package 7 because my boys are older and definitely interested in robotics! 🙂

  157. I would choose package 7. We would have a lot of fun with it!

  158. I would choose either Science 6 or Science 7!

  159. We would like this because it is literature based. We would pick level 7

  160. I have never heard of Book Shark before and would love to try it since it’s new to me. We’d probably go with the Robotics option since I have a student interested in that.

  161. This giveaway looks like a lot of fun!

  162. I would choose the kindergarten package since I haven’t picked a science curriculum for my youngest girls yet

  163. Thanks for the awesome giveaway!

  164. Science hasn’t been my strongest suit as we were made to memorize even when we didn’t understand some of our lessons. This is the main reason why we choose to homeschool the kids – for them to be interested, which will help them understand and learn better.

    We would love to win BookShark Science K Package to help us as we begin our journey. I love the curriculum, and the kids will too!

  165. My son would adore BookShark Science 4 Package! This would be a wonderful resource for our homeschool year!

  166. So many great packages to choose from!

  167. My boys love science! I would choose with 1 or 3! I can’t wait to do the lesson they provided with my boys!

  168. I would choose science 4

  169. I would choose science 4…my boys love science

  170. For us it would be # 7, the robotics would absolutly be a huge hit with my kids. I love that everything is included and it seems like it would involve the whole family.

  171. Hard to choose! I think either K or #4. They all look fun!

  172. I would love Science K since we have yet to pick out our science curriculum for the upcoming year. >_<

  173. If I won, my son and daughter would love Science 4. What a great giveaway!

  174. This is really cool!

  175. I would choose package 7. My kids are really into robitics and technology right now. Looks fun.

  176. Great idea for a fun activity!

  177. We are very excited for our first year of homeschooling!

  178. This looks awesome! My kids and I love science and would enjoy this.

  179. I’ve not heard of bookshark before but am blown away by what I see. Should I win making a decision will not be easy! Non the less I think I can manage 🙂

  180. I would love to have the robotics level because my son is fascinated by robots.

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Hi, there! I’m Heather Bowen, and I am so glad you’re here.

My passion lies in helping homeschool moms balance marriage, motherhood, homemaking, and homeschooling all while remaining sane!

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