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Lesson Plan
Illustrative Mathematics

Counting Squares

For Teachers K - 2nd Standards
Challenge young mathematicians' understanding of squares with this geometry puzzle. The task is simple, identify as many squares as possible in a 3x3 array. Allow learners to work independently or in pairs as they search for squares,...
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Worksheet
Curated OER

Counting Objects Up to 120

For Students K - 3rd
If you stare at these too long, you might get dizzy! There are 10 arrays of objects for counting on these two worksheets. Learners are instructed to count, and presumably, write each total.  None of these go over 120.  If learners aren't...
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Worksheet
Curated OER

Ten More or Ten Less

For Students K - 2nd
This set of problems has learners complete a variety of tasks as they practice adding 10 and subtracting 10. An apple tree with two apples isn't very fun; how about one with ten more? They draw the apples onto the tree and write the...
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Lesson Plan
Curated OER

Number Patterns

For Teachers K - 2nd
Help your students to identify even and odd numbers. In this number sense lesson, they read the book Madeline and use counters to identify which number has a "partner." Learners write down odd and even numbers on a whiteboard.
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Lesson Plan
Curated OER

Shapes from Shapes

For Teachers K
Geometric shapes are really cool. Examine triangles, quadrilaterals, trapezoids, rhombuses, parallelograms, pentagons, and hexagons with your class. They draw large shapes and small shapes then compare them to understand their shapely...
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Lesson Plan
Curated OER

Junk Sort

For Teachers K - 1st
Students analyze objects by one or more attributes. In this sorting lesson, students use manipulatives and string or yarn to create a sorting game. Students read books and items from the classroom to sort. 
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Lesson Plan
Curated OER

Footprints

For Teachers Pre-K - 1st
Students explore patterns.  In this patterns geometry lesson plan, students identify and extend patterns including body parts, movement, geometric shapes, noises, and footprints.  Students create and share an original pattern.
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Lesson Plan
Curated OER

All About Shoes

For Teachers K
Students sort shoes. In this sorting lesson, students use shoes to explore attributes and practice sorting. This lesson encourages the use of a Venn Diagram to aide in student sorting.
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Worksheet
Curated OER

Halloween Count

For Students Pre-K - 1st
In this Halloween worksheet, students count the Halloween pictures in each problem. Students count Halloween pictures in 3 problems.