Topic
Activities about commutative property
Lots of Pieces
🧩In this updated activity, students will explore estimation and addition with a collection of puzzles. It’s important to start with the starter slides, where students will use their...
Number Sense
3-act tasks
Grades 2–5
Gauss and our star of stars
How many stars are in this image and how did you count them? For Adventurer members we have a teaching suggestions and our solution sheet.
Number Sense
Geometry
Grades 3–7