1.NBT.1 – Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

**Internet Resources (Videos, Websites, etc.)**

Illustrative Mathematics Project

K-5 Math Teaching Resources

NCTM Illuminations

- Building Numbers Up to 10
- Building Sets of 11 and 12
- Building Sets of 13 and 14
- Building Sets of 15 and 16
- Building Sets of 17 and 18
- Building Sets of 19 and 20
- Let’s Count to 20
- Numbers and Language
- Ten Frame
- Toy Shop Numbers

Read Write Think

Science Net Links

Wonderopolis

- Counting and number patterns: Counting review – 0 to 10 (First grade – A.1)
- Counting and number patterns: Counting review – up to 20 (First grade – A.2)
- Counting and number patterns: Counting – up to 30 (First grade – A.4)
- Counting and number patterns: Counting – up to 100 (First grade – A.5)
- Counting and number patterns: Writing numbers in words (First grade – A.17)

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