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PPT
Curated OER

Ordering to 20

For Teachers K - 1st
Given a series of number lines, learners fill in missing number from 1-20 using the number pool provided. They add each number untill the number line is complete. This is a great activity to foster counting skills, number ordering, and...
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Lesson Plan
Curated OER

Tens and Ones Fun

For Teachers K - 1st
Youngsters use their large motor skills to build numbers to 20 in this outdoor, kinesthetic, collaborative activity. Amass cardboard boxes for groups to stack, sort, and bundle into 10s and 1s to show numbers and place value. They'll...
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Worksheet
Curated OER

Addition and Subtraction: numbers to 20

For Students 2nd - 4th
Does your school encourage learning math facts or fast facts? If it does you can definitely use this resource. There are 20 lists, each list contains 10 problems, and each problem set focuses on adding and subtracting specific numbers,...
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Worksheet
Curated OER

Addition and Subtraction Problems: numbers to 20

For Students 2nd - 4th
You'll never be out of subtraction worksheets again. Here are 11 different sheets that require learners to add or subtract to find sums or differences up to or less than 20. Perhaps these can be used at home, at a work station, or to...
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Worksheet
Curated OER

Practice Numbers 11-20

For Students Pre-K - 1st
Your small-handed mathematicians practice tracing and writing numbers from 11 to 20 in this straightforward instructional tool. Trace 3 times; write several more. 
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Lesson Plan
Curated OER

Developing Number Concepts

For Teachers K - 1st
Children count and group a set of beans, sorting into groups of 10 and noting the number that remains. Learners understand the concept of numbers greater than ten, and play a game, guessing numbers greater than 10 using hints given by...
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Worksheet
Math Salamanders Ltd.

Missing Subtraction Facts to 20 sheet 2

For Students 2nd - 3rd Standards
They can tackle this worksheet once your class has mastered basic double-digit subtraction. They'll need to find the missing subtraction facts to 20 that complete each problem.
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Lesson Plan
Curated OER

Solve Story Problems: Sold! A Mathematics Adventure

For Teachers K - 2nd
Young mathematicians listen to the book Sold!: A Mathematics Adventure by Nathan Zimelman where they encounter ways to solve story problems. They then create and solve start unknown addition and subtraction equations. Resource builds in...
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Worksheet
Curated OER

Counting From 1 to 20

For Students 1st - 4th
Children are given a mixed up number chart 1-20, and are asked to sort out all the even, odd, prime, and composite numbers. This worksheet is intended for 2nd grade but may not be suitable for learners under 10 or those who have not yet...
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Worksheet
Curated OER

Ordering Numbers to 20

For Students 1st - 2nd
In this number order worksheet, students study the 5 lists of numbers and rewrite each set so the numbers are ordered from least to greatest.