Math Stacks

• Grades 1–4
• Math

Solitaire with sums. Stack cards whose answers match and bank them on the ★ slots. Math practice that doesn't feel like homework.

Free trial: 3 days with the first 25 levels of every game. No card needed.

What it teaches

• Solve addition and subtraction facts in your head
• Multiplication and division facts (+Multiply and Grown-Up bands)
• Understand the equal sign: two equations can have the same answer

Chapter by chapter

• Add/Subtract: Add and subtract within 20
• +Multiply: Multiplication facts
• Grown-Up: Mixed operations incl. division

Standards

Common Core (Math / ELA)

• CCSS.Math.Content.1.OA.D.7 Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.
• CCSS.Math.Content.2.OA.B.2 Fluently add and subtract within 20 using mental strategies.
• CCSS.Math.Content.3.OA.C.7 Fluently multiply and divide within 100 … know from memory all products of two one-digit numbers.

TEKS (Texas)

• TEKS 1.5E Understand that the equal sign represents a relationship where expressions on each side of the equal sign represent the same value(s).
• TEKS 2.4A Recall basic facts to add and subtract within 20 with automaticity.
• TEKS 3.4F Recall facts to multiply up to 10 by 10 with automaticity and recall the corresponding division facts.

B.E.S.T. (Florida math & ELA)

• MA.1.AR.2.2 Determine and explain if equations involving addition or subtraction are true or false.
• MA.2.NSO.2.1 Recall addition facts with sums to 20 and related subtraction facts with automaticity.
• MA.3.AR.2.2 Determine and explain whether an equation involving multiplication or division is true or false.

Practice / process standards (CCSS MP, Florida MTR, TEKS process)

• CCSS.Math.Practice.MP7 Look for and make use of structure.
• MA.K12.MTR.3.1 Complete tasks with mathematical fluency.