Gift Cards


2 in stock
Curbside Pickup Available or home delivery on in-town orders*

Recommended for ages 8 to 12 years


In this story-based STEM kit, Pepper Mint visits her aunt who is a scientist researching primates. She lives in a treehouse in the rainforest on the island of Borneo. The treehouse is not connected to the electrical power grid, but Pepper Mint and her aunt devise mechanical inventions to accomplish various tasks. In The Great Treehouse Engineering Adventure they equip the treehouse with mechanical equipment using pulleys, winches and gears, and learn lessons in physics. Projects include a rope ladder, a pulley to lift heavy objects into the treehouse, a rubber-band-powered lift, a rotating palm leaf umbrella, a zipline, a catapult and a trap door. At the end of the story, Pepper Mint wires up a string of LED lanterns using conductive thread and a battery holder to light up the treehouse in the dark jungle night. While doing this, she learns about electrical circuits. The kit includes materials to build the treehouse and do the projects, a full-color illustrated storybook and step-by-step instruction manual, as well as a scale Pepper Mint figurine.


  • STEM kit from Thames & Kosmos offers experiments and activities that follow the adventures of Pepper Mint, a curious, skillful and creative young engineer.
  • Activities are presented in a full-color, 32-page storybook manual with beautiful illustrations and step-by-step instructions. As you read the story of Pepper Mint’s adventures, you build the projects and conduct the nine experiments that appear.
  • Each experiment adds another element to the treehouse: Building the Rainforest treehouse, retractable ladder, block-and-tackle hoist, belt pulley, rain shield, zipline, trapdoor, coconut catapult, and string of lanterns. Every project provides a short explanation of the physics behind it.
  • Kit includes most items necessary to construct the large wooden model of a treehouse and conduct the experiments. Some items are readily available in your home and are not included.*
  • After assembly, the treehouse doubles as a playset where kids can continue to act out stories about Pepper Mint with the scale figure included.
  • Supports STEM learning.
  • Develops principles of mechanics, principles of engineering, physics, science, experimental skills and critical thinking skills. 
  • Award nominee: Toy of the Year (TOTY). 
  • Package dimensions: 17 x 12 x 4 inches (LxWxH).
  • Not suitable for children under age 3 years!

*Kit requires items not included: Ruler, scissors, colored pencils, craft glue, wood glue, Scotch tape, 5 coins, brown paper, and 2 AA batteries.

0 stars based on 0 reviews
Your Happiness Is Ours
Your Happiness Is Ours
Not 100% satisfied with your purchase? Let’s talk.
Have questions? Email us now

Customer Reviews

0 stars based on 0 reviews

+ Add your review
By using our website, you agree to the use of cookies. These cookies help us understand how customers arrive at and use our site and help us make improvements. Hide this message More on cookies »