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1st Grade Addition and Subtraction

CCSS.MATH.CONTENT.1.OA.1

1. Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.2

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2/3 lessons per topic

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1st Grade

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Explain how you will assess student prerequisite knowledge, student progress, and how well they met the objectives. 

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Explain how you will assess student prerequisite knowledge, student progress, and how well they met the objectives. 

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Formal and Informal Assessments: For students this age, assessments should be fun and not feel like a "test" or what they know so I will try to create fun, engaging learning strategies for students.

Summative Assessments: Unfortunately, for this, I would create a fun "test", but it would be with something the students are into.

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Students will...

know how to count to 20 as well as subtract by 20 or less. understand that each number represents a whole.

be able to practice addition within 20, using counting strategies such as the number line, and visual models.

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MSTC Lesson Plan Template (Sorting Shapes) (1)

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Shapes

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Informal  Assessment (Whiteboard Problems) 

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Informal  Assessment (Whiteboard Problems) 

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The student will come up to the board and answer one problem on the whiteboard:

One addition or subtraction to check for the skill set

2D shapes (identify one shape and count the number of sides)

Identify which is small, medium, or large

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Students will use a Post-it:

To answer one premade Post-it addition/subtraction problem

Draw a 2D shape and add the number of sides.

Draw 3 different measurements big, medium, and large.

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CCSS.MATH.CONTENT.1.OA.5

Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

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Students will work together to create:

A few word problems (Addition or Subtraction) that other groups will try to solve.

Use shapes to create a group picture.

Create different legths of measurements for other groups to solve.

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Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.

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Order three objects by length; compare the lengths of two objects indirectly by using a third object

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Students will:

know how to identify 2D shapes. (Circle, square, triangle, etc.)

understand how many sides each shape has.

be able to identify basic 2D shapes within their environments.

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Students will:

know how to measure basic objects using unit cubes. (pencils, paperclips, gluesticks)

understand the difference between inches and centimeters.

be able to compare the lengths of 2 objects.

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My Reflections on Math Unit and Lesson Plans.

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These are all the references for my math lesson plans.