“Save the Usable!”

How our 2nd/3rd-grade class made

our “conservation inventions”


On this web page, Will and Calder share some “how-to” tips and summarize how our class created our “conservation inventions.”

**Be sure to visit our project website here to learn the full story.**

Title: “Save the Usable!”--How to Make “Conservation Inventions” that Avoid Waste

Introduction and Description:


  1. 1.10 MaKey MaKeys (1 for every group of 2 students);

  2. 2.(optional) 10 PicoBoards (1 for every group of 2 students);

  3. 3.miscellaneous objects--found at home/school, or from second-hand stores



  1. 1.Learning about Scratch

  1. 2.Learning to Use the MaKey MaKey

  1. 3.   Brainstorming


       What are some ways in which humans waste things?

Here are a list and a summary of some of our ideas about ways in which humans waste materials and resources.

4. Choose problem

  1. 5.Brainstorm Possible Solutions

Here is a sample of students’ brainstorming.

Here is a blank template for brainstorming.

  1. 6.Invention Planning

Sample of student work.

Blank template.

7. Building and Debugging

  1. 8. Videos and Website

Here is a template that helped students write scripts for their videos.

**Please visit our project website here.**

Final Thoughts