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Worksheet
Curated OER

Mental Math: Adding 10s

For Students 1st
To develop mental math skills for adding 10s, learners read an example, solve one carefully scaffolded problem, and then complete 6 more independently. Pictures of 10-rods make the connection between sets of 10 and the corresponding...
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Interactive
Curated OER

Teen Numbers

For Students 1st - 3rd
Reinforce that numbers in the teens are 10 plus more with this worksheet of 6 practice problems. Children count and circle a group of 10 objects. Then they count on the extras and write the total number in a box. Some sets have the 10...
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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. Young scholars understand the concept of numbers greater than ten, and play a game, guessing numbers greater than 10 using hints given...