K-2 Connections Sampler

38 G R A D E 2 Explicit, Conceptually-Based Instruction Lesson Plan Student Book 186 ©MathTeachersPress, Inc.Reproduction by anymeans is strictly prohibited. Name ________________________________________________________________ TENS ONES TENS ONES 47 – 23 24 Nowwork the problem this way with paper and pencil. Subtract 4 7 the ones – 2 3 4 Subtract 4 7 the tens – 2 3 2 4 Use base ten blocks to subtract.Cross out blocks. 1. 35 – 12 2. 49 – 35 3. 46 – 20 4. 70 – 30 First, build the larger number. Then, remove the smaller number and read the number left. 47 bears are under the BigTop. 23 bears leave. Howmany bears are under theBigTop? You can use base ten blocks on a Place ValueMat. Conceptually based instruction leads students through the Three Stages of Learning: concrete , representational , and finally abstract . E XAMPLE L EARNING O BJECTIVE : SUBTRACT TWO NUMBERS , 2 DIGITS EACH , WITH NO REGROUPING Introduce & Explore Visualize Reinforce