Represent and solve problems involving addition and ...



| Represent and solve problems involving addition and subtraction. |

|1. Use addition and subtraction within 100 to solve |Problem of the day |

|one- and two-step word problems involving situations |Math Journals |

|of adding to, taking from, putting together, taking |Ixl website |

|apart, and comparing, with unknowns in all positions,|Teach The Way They Learn Book- Games for many concepts |

|e.g., by using drawings and equations with a symbol |Daily Word Problems Book |

|for the unknown number to represent the problem.1 |The Yolk’s On You! Level 1 Game (see attached) |

| |Level 2 |

|Add and subtract within 20. |

|2. Fluently add and subtract within 20 using mental | |

|strategies.2 By end of Grade 2, know from memory all |Salute- 2 Students hold up a card without looking. A third student announces the sum. The other |

|sums of two one-digit numbers. |children guess the number they’re holding |

| |High Low Games-Dice game for two. Roll two dice. Add the sum. Roll the high low dice to see who |

| |wins. |

| |Around the world |

| |Number Collections |

| |Making Ten with Cards |

| | |

| |Mind Twister Books. –Strategies and fluency |

| |Two Minute Math/ Summer Math Fact Challenge |

| |Math Fact Survivor - Game |

| |Beat the Clock – Game (See attached for materials and directions) |

| | |

|Work with equal groups of objects to gain foundations for multiplication. |

|3. Determine whether a group of objects (up to 20) |Brain Pop Jr. –Even/Odd |

|has an odd or even number of members, e.g., by |Tumblebooks- One Odd Day, One Even Day |

|pairing objects or counting them by 2s; write an |Pick a card. |

|equation to express an even number as a sum of two |Even Odd Poem |

|equal addends. |Games/EvenOdd.html |

| |Even Odd Scramble - Game |

|4. Use addition to find the total number of objects |BrainPop Jr.- Making Equal Groups |

|arranged in rectangular arrays with up to 5 rows and |Bingo Dabbers |

|up to 5 columns; write an equation to express the |Math Their Way |

|total as a sum of equal addends. | |

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1 See Glossary, Table 1.

2See standard 1.OA.6 for a list of mental strategies.

The Yolk”s on You!

Materials : 2 egg cartons – 1 carton labeled 1-10, the other 10-100. (10 counters per carton.) Use two cups on the end of each carton to store counters. Only 10 cups per carton are for the actual computing. Index cards , numbered 1-100 A stack of 20 word problem cards representative of addition and subtraction problems 0-100 presented in 3 diff. scenarios using the same fact family. Separate these into two piles 0-20 and 0-100. A dry erase board

Level -1

Using one carton labeled 0-10, select a word problem card and solve using individual counters and cups to represent the math facts presented in all positions. After each problem is solved using manipulatives, each equation must be written with a symbol showing the unknown number.

Level 2

Follow the same procedure using both cartons, and word problem piles increasing the possible math facts to represent 0-100.

2.OA.2 Math Fact Survivor

Class lines up in one line. They approach the teacher 2 at a time. The first child to guess the missing number on the flash card, has survived and goes to the end of the line, able to play again. The other child sits down. Continue the game until one child remains as the sole survivor.

Beat the clock

Children pair up. One is holding the flash cards, the other guessing the answers. They are timed for two min. and strive to increase the number of cards correctly answered each day.

2.OA.3

Even Odd Scramble

Using an egg carton, and counters, each child pulls a card from the 0-100 pile, and must predict whether the number is even or odd . They self-check by filling the egg cups with counters showing the ones place value only to see if the numbers represent pairs-even, or single cups, odd.

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