Pyramid puzzles are a fun and deceptively tricky puzzle. Sometimes these can’t be done without some risk taking—encourage guessing and checking, and learning from the inevitable mistakes, especially on the harder puzzles. More on Pyramid Puzzles here.

## What’s the biggest rectangle?

Math concepts: Area, perimeter, number patterns Materials: Graph paper, pencil Tags: 3.MD.7.a-b, 4.OA2, 4.OA.3, 4.OA.5, 4.OA.5, 5.OA.3, MP1, MP2, MP3, MP5, MP6, MP7. Of all the rectangles with a given perimeter, which one has the largest area? This simple question launches a fascinating exploration. The Launch Remind students of the definition of area and perimeter. Then pose the following question: …

## Magic Triangles

Topics: Addition, Subtraction, Logic Materials: Pencil and paper Recommended Grades: 1, 2, 3 Common Core: K.OA.A.2, K.OA.A.4, 1.OA.A.2, 1.OA.B.3, 1.OA.B.4, 1.OA.C.5,1.OA.C.6, 1.OA.D.8, 2.OA.B.2, MP1. Magic Triangles are a simple addition/missing addend problem that creates opportunities for higher level thinking. Kids must place the numbers 1 through 6 on the outside of a triangle to make the numbers on each side sum to …

## The Hundred Chart Game

Topics: addition, subtraction, strategy Materials: Two types of tokens (gems & pawns), hundreds chart Recommended Grades: 1, 2, 3 Common Core: 1.NBT.C.4, 1.NBT.C.5, 1.NBT.C.6, C2.NBT.B.5 Add and subtract 10s and 1s to pick up the tokens on the hundreds chart. Why We Love The Hundred Chart Game This game delivers tons of addition and subtraction practice in a way kids love. …

## Flower Petal Puzzles

Topics: addition, subtraction, logic Materials: Worksheets, pencil and scratch paper Recommended Grades: 1, 2, 3 Common Core: 1.OA.A.2, 1.OA.C.6, 1.OA.D.8, 2.OA.B.2, MP1, MP7 Put each number in a “petal” so each line of three numbers in a row has the same sum. Why We Love Flower Petal Puzzles This is a simple but thought-provoking puzzle. It’s a great way to …

## Math for Love Math Circle Lessons

This is a collection of some of the games and activities that are ideal for running before and after school math circles. This particular book is designed for grades 2-3, though most of the activities would work for older or younger students. The math circles are about enrichment. Our goal is that students will leave them loving math more, and …

## Sum – Memory

Topics: Addition Materials: Cards Recommended grades: K, 1, 2, 3 Common Core: K.OA.A.2, K.OA.A.4, K.OA.A.5, 1.OA.C.6, 2.OA.B.2 Sum-Memory is Memory with a twist: instead of trying to capture identical pairs, players are trying to find pairs that add up to 5, 10, or another target number. Why we love Sum-Memory Sum-Memory is all the fun of memory, but with the …

## Target Number

Math Concepts: Arithmetic, equivalencies Equipment: pencil & paper Grades: K, 1, 2, 3, 4, 5 Common Core: Variable, but especially OA, i.e., 1.OA.C.5, 2.OA.B.2, 3.OA.C.7 Time: 5 – 15 minutes You know the answer. What’s the question? Why We Love Target Number This is a quick check-in that adjusts to the abilities of each student, allows for creativity and arithmetic practice together, and …

## Save Twenty

Materials: Five Dice per game; scratch paper and pencil Topics: Addition, estimation, probability Recommended Grades: 1, 2, 3 Common Core: 1.OA.C.5, 1.OA.C.6, 2.OA.B.2 A quick, fun game for arithmetic practice with numbers up to 20. Why We Love Save Twenty The game is quick and fun, with an element of risk that makes each turn exciting. Lots of estimation and addition practice are …

## Pig

Topics: probability, strategy, addition, estimation Materials: One 6-sided die, pencil and paper Recommended grades: 1, 2, 3, 4, 5, 6 Common Core: For Pig and Big Pig:1.OA.A.1, 1.OA.A.2, 1.NBT.C.4, 2.OA.B.2, 2.NBT.B.5, 2.NBT.B.6, 3.NBT.A.2 For Odd Pig Out: 3.OA.A.3, 3.OA.B.5, 3.OA.C.7 , 4.NBT.B.4,, 4.NBT.B.5, 4.MD.B.4,, 5.NBT.B.5, 5.MD.B.2, 6.SP.A.1, 6.SP.A.2, 6.SP.A.2, 6.SP.B.5 Roll the dice and collect points. You can go as long as …