Price: 100 points or $1 USD

Subjects: math

Grades: 1,2,3

Description: In this Boom Deck, students practice using strategies to subtract with differences within 20. Students are able to drag an arrow to indicate which strategy they used. This deck self-grades and gives students 12 random cards to solve each time it's assigned. Strategies students can use include: number line, ten frame, counting fingers, counting objects, drawing a picture, and counting down. Directions are included on first slide.