NGSS
K-2-ETS1-1
4 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Kindergarten Science · Chapter 1 · Lesson 5
Use what you know to solve a problem.
Kindergarten Science · Chapter 2 · Lesson 3
Make a cooler spot on purpose.
Kindergarten Science · Chapter 5 · Lesson 4
Decide what to do, and say why.
Grade 1 Science · Chapter 4 · Lesson 4
Copying Nature to Solve a Problem
Steal a good idea from a living thing.