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ODE.1.NBT.4 Add within 100, including adding a two-digit number and a one-digit number and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; record the strategy with a written numerical method (drawings and, when appropriate, equations) and explain the reasoning used. Understand that when adding two-digit numbers, tens are added to tens; ones are added to ones; and sometimes it is necessary to compose a ten.

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Students will complete a Kahoot to review adding one-digit numbers and even tens.

Objective: By the end of the 25 minute lesson, students will be able to use pumpkin seeds to add within 100, specifically adding 2-digit numbers and a multiple of 10 demonstrated on a quiz scoring ⅘.

“I can add within 100 using pumpkin seeds.”

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Students will use Screencastify to show how to solve given problems using online manipulatives.

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Students will use the SmartBoard slideset to apply adding with manipulatives to adding two-digit numbers.

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Students will complete a Linoit sort intended to help students identify which method is best to solve different problems. Students will be given a variety of equations and will need to sort them into different categories based on the strategy they would use to solve the problem (compose a ten, add ones then tens, make a trade).

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Students will complete a NearPod exercise where they evaluate if a given problem and solution are a match, or in other words, if the solution matches the question. If the solution does not match, students will need to find the correct answer and determine why the given solution was wrong.

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Students will create and solve equations using physical manipulatives and a whiteboard. Students will use physical manipulatives and whiteboards to draw images and write equations to satisfy the standard and work hands on with the materials. Students will then take a video of themselves explaining the equation they created and show, using the manipulatives/whiteboard, how they found the solution.