Hi! I'm Bobo! Up here in the treehouse live two squirrel friends. Let's meet them! 🌳

The Squirrels' Treehouse 🐿️

        Meet Nutty and Hazel!

        They have a magical number triangle to show you.

A number triangle has 3 corners. Three numbers — and four sums! Let's see! ✨

The Number Triangle

        The biggest number sits at the top.

        The two smaller numbers sit at the bottom.

Watch! With 1, 6, 7 we can make four sums! 🎉

Try 1, 6, 7

1 + 6 = 7

6 + 1 = 7

7 − 1 = 6

7 − 6 = 1

        All four sums use the same three numbers! That's a fact family! 👨‍👩‍👧
      

Drag the missing acorn to the empty corner!

Round 1

Bonus! All numbers are placed. Now drag the four sums to the right spots! 🎯

Bonus: Match the Sums!

add ➕

take away ➖

🟥🟨🟦🟩🟧🟪🟥🟨🟦

WONDERFUL!

Nutty and Hazel are so proud!

Your Score

        You learned:

        ✅ Three numbers make a fact family

        ✅ Two add-ups + two take-aways

        ✅ Number triangles tell us all four!