Butterfly Case STEM Observation

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  • 5 live baby caterpillars
  • 12 inch tall mesh habitat
  • Two deluxe station logs
  • Flower-shaped butterfly feeder
  • STEM Butterfly Journal

åÊThe Butterfly Case STEM Observation kit allows children to observe caterpillars in their incredible journeys from worm to beautiful butterfly. You can do this all by allowing the eggs to hatch within the Observation Pod, a see-through mesh tank where the eggs will hatch. Watch as your caterpillars come to life, and make sure that they have plenty of plant matter to munch on. You will soon have incredible butterflies.


  • Product Dimensions: 10 x 10 x 12 inches
  • Item Weight: 1.3 pounds
  • Manufacturer Recommended Age: 4 years and up

Our SmartKidsPlanet initiative began in 2017 when 3 geeky and dedicated parents saw a gap in the children’s toys and games market. An opportunity was spotted while we struggled to find toys and games for our kids which enriched their minds and guided them toward science, art, math and construction. The trio then knew that their paths were set, establishing an online shop with a comprehensive range of intelligent toys for babies, children and young teenagers.

With offices based in California, our SmartKidsPlanet team enjoys a daily growth in our presence within the children’s educational toys market. We love our new place in life, and we love helping young minds with their growth and skill development, all while having as much fun as possible.


We ship all our products directly to you from our warehouses located in multiple locations in the West and East Coasts.

Processing Time: All orders placed after 2 PM EST will be shipped the next business day. Orders placed after 2 PM EST Friday will be shipped on Monday. 

Orders are shipped and generally arrive within 2 to 3 business days after the order is processed. Tracking information will be sent via email once your order has been processed. The tracking number may not become active for 24 - 48 hrs.

Kindly take note that due to our business utilizing multiple warehouses within the United States, orders of more than one item may arrive as separate deliveries at different times. 

Orders made to PO BOX may take up to 12 days. Additionally, we do not ship to military bases. Hawaii and Alaska

Customer Reviews

Based on 8 reviews
Joan Snider
Clean the caterpillars poo!! If a cacoon falls, lay on paper towel

Bought for my 5yo and 2yo sons. They loved it! I was worried based on some reviews that I wouldn't get many butterflies. But I saw one review that stated they cleaned the Caterpillar poo off of the food so they all were able to get plenty to eat. I think that's what did it! We are waiting on our last butterfly to emerge! So far we have 11 healthy butterflies!

kathleen carman
My 7yo literally said "You made all my dreams come true!"

My 3 youngest, 4, 6, and 7, loved, loved, LOVED this kit. We actually got 12 caterpillars instead of 10, and 11 out of the 12 made it to butterflies! We live up in the Rockies at 9600 feet and the caterpillars were already moving around about 20 minutes after we opened the box. My girls loved watching them go from teeny tiny caterpillars to large ones to chrysalids to butterflies over several weeks. And they are now happily enjoying their release as the butterflies slowly make their way from the inside of our house to the outdoors. I'm buying a refill as this was one of the best purchases I've ever made!

One caveat: the caterpillars poop -a lot. It definitely looks gross but it doesn't smell, and if you have kids poop shouldn't gross you out too much, but if it does, well, be aware. Tbh, I made my husband move the chrysalids to the enclosure so I didn't have to touch it, lol...

Dana Andruzzi
Fun Project

For the first few days they were not moving much, and I was worried they were dead. However I noticed they did seem a little bigger despite hardly moving.
Each cup had 6 caterpillars. We have a total of 9 out of 12 that developed into butterflies. One cup all 6 turned into butterflies. The other cup only 4 out of the 6 turned, but one butterfly was unable to move and open its wings so it died. We ended up with 3 out of 6 from that cup.
1) All of the webbing! I had one caterpillar stuck on the bottom of the cup because it could not move due to the webbing. It formed into a chrysalis on the bottom of the container, but it is not going to form into a butterfly. The other butterflies that made it have been out for about 2 days now. This chrysalis has turned black. The webbing also made it difficult to remove the lid to place it into the butterfly habitat. I could hear the webbing ripping from the lid as I pulled it off. I was worried I would lose some of the chrysalises in the process.
The first butterfly that emerged (which we were super excited for) was so wrapped up in the webbing it got stuck and was unable to fully open its wings or move around.
2) All of the red liquid from the butterflies! It got everywhere. the cage got stuck to the table. My table had the liquid all over. I wish the instruction booklet had suggested putting something under the cage if you were going to place it on a table. The butterflies got it on the bottom, all over the sides, and all over my table.

Jack Pinkerman
Great Educational Gift!

This was from the Easter Bunny.
It actually arrived sooner than expected
We got the kit WITH the caterpillars. Just so you know....in the 4 days prior to Easter those Caterpillars more the DOUBLED in size.
I know they grow quickly, but didn't expect it to be that quick. It's been 2 days since the kids received this and the caterpillars are already starting to hang from the lid to start turning into chrysalis. So keep that in mind if you are getting this as a gift, you may want to opt for the one with the voucher to order the caterpillars at a later date.
NOTE: some of the things that people said about the information not being up to date, I believe has since been fixed. The directions and the info. book were informative on all the items that came in this kit.
So far things are looking good, we are excited to see the butterflies in a couple weeks!

Gene Bowers
Fun for kids and adults

We really enjoyed this kit! The kids looked forward to waking up every morning and seeing how the caterpillars had grown and watching them hatch was really delightful.

We received 6 caterpillars in each jar. 1 was unable to remove himself from his chrysalis and another hatched with malformed wings so we will be allowing that one to live out his days here with us.

This was a wonderful experience for the children and a great way for them to see the life cycle of butterflies for themselves. We will definitely be purchasing more caterpillars next year because we have decided to make this a summer tradition!




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