AAA Math
Aaa Math: Adding Two Digit Numbers Mentally
Read these two strategies for adding two-digit numbers in your head. Then try out the one you like better by playing the game. Running totals of your correct and incorrect answers as well as a percent score of your correct answers will...
Better Lesson
Better Lesson: Smiley Faces and Up
Automaticity with patterns that allow students to easily manipulate larger numbers is the aim of this activity.