## 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 …

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## Number Talks

Topics: Mental math, numerical fluency; argument & critique Materials: White board or projector Time:5 – 15 minutes Common Core: Variable, but especially MP3 This mental math routine creates powerful positive habits for students. Why We Love Number Talks Number talks don’t replace other instruction, but they are a powerful complement to it. They get all students involved, help them strengthen fluency, intuition, …

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## Math Games and Movement Breaks

Enjoying these lessons? Join our mailing list now and we’ll send you lesson updates, our 8-page Games to Play at Home packet, all our New York Times puzzles, and much more.   Topics: addition, subtraction Materials: none Recommended grades: K, 1, 2, 3, 4 Common Core: K.OA.A.2, K.OA.A.4, K.OA.A.5, 1.OA.C.6, 2.OA.B.2 When kids get antsy, it is time to break out …

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## Cuisenaire Rod Lessons

Topics: Addition, subtraction, measurement, skip counting Materials: See specific lessons Recommended Grade: K, 1, 2 Common Core: K.CC.B.4, K.CC.B.5, K.OA.A.1, K.OA.A.2, K.OA.A.3, 1.OA.A.1, 1.OA.A.2, 1.OA.D.7 Overview This series of lessons is meant to introduce Cuisenaire rods in a creative, engaging way, and see how Cuisenaire rods can illuminate and motivate addition, subtraction, and measurement. Why We Love Cuisenaire Rods Cuisenaire rods are …

## Domino Sorting

Math concepts: Addition, Classification Equipment: Domino Set Recommended Grades: K, 1, 2, 3 Time: 15 – 45 minutes Common Core: K.OA.A.2, 1.OA.B.3, 1.OA.C.5, 1.OA.C.6, 2.OA.B.2, MP1, MP6, MP7 Overview What is the middle domino? This question launches the project of sorting the dominoes from least to greatest. Why We Love Domino Sorting Domino sorting is a perfect math challenge for a station or …

## Counterexamples

Topics: logic, deduction, mathematical argument, communication Materials: None Recommended Grades: K, 1, 2, 3, 4, 5, 6, 7, 8 Common Core: Variable, but especially MP3 Proving the teacher wrong. Rigorously. Why We Love Counterexamples Every kid loves to prove the teacher wrong. With Counterexamples, they get to do this in a productive way, and learn appropriate mathematical skepticism and communication …

## 1-2-3 Nim on a 10-Frame

Topics: logic, patterns, addition to 10, counting to 10, subtraction Materials: One 10-frame and at least ten counters per pair of students Recommended Grades: K, 1 Common Core: K.CC.A.2, K.CC.B.4, K.CC.B.5, K.OA.A.1, K.OA.A.2, K.OA.A.4, K.OA.A.5, 1.OA.B.4, MP1, MP7 How to Play Players take turns placing one, two, or three counters on the open squares of a 10-frame. Whoever fills up …

## 1-2 Nim

Topics: logic, patterns, addition, counting, subtraction, divisibility and remainders (optional) Materials: Counters (tiles, beans, pennies, etc.) or paper and pencil Recommended Grades: K, 1, 2, 3, 4 Common Core: K.CC.A.2, K.CC.B.4, K.CC.B.5, K.OA.A.1, K.OA.A.2, K.OA.A.5, 1.OA.B.4, 1.OA.C.5, 2.OA.B.2, 3.OA.D.9, 3.OA.A.2, 3.OA.A.3, 4.OA.C.5, MP1, MP2, MP3, MP5, MP7, MP8 You can take one or two counters from the pile. How do …