4 in a Row

WELCOME SCREEN
The welcome screen acts as the game starting point. From here you can mute all game sounds. Hit the pulsing play button to get started.
Content Skill: Subtraction
Common Core State Standards: CCSS.Math.Content.2.OA.B.2 - Fluently subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
Educator Info
Subtract within 20
Fluency with subtraction facts
Commutative property of subtraction








