## Related Resources

The Counting and cardinality Number Line above is aligned, either partially or wholly, with standard 4OA04 taken from the CCSM (Common Core Standards For Mathematics) – see the extract below). The resources below are similarly aligned.

*Find all factor pairs for a whole number in the range 1 to 100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1 to 100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1 to 100 is prime or composite.*

### Chart

#### Prime Numbers

- Prime Numbers to 100 ( Number Square)
- List of Prime Numbers – (up to 251)

### Example/Guidance

- What Factors Are
- Lesson on Factors
- Lesson on Multiples
- Finding Prime & Composite Numbers
- Prime Factorization With Factor Trees

### Game

#### Target Game

### Number line

- Skip Counting – By 2, 3, 4, 5, & 6 (small marks at 1s, large marks at intervals and no numbers)
- Skip Counting – By 11 (small marks at 1s, large marks every 11 and no numbers)
- Skip Counting – By 12 (small marks at 1s, large marks every 12 and no numbers)

### Worksheet

- Factors (3-page worksheet. Includes Guided Practice)
- Factors (Prime & Composite Numbers) (3-page worksheet. Includes Guided Practice)
- Multiples (2-page worksheet. Includes Guided Practice)
- Division & Multiples (2-page worksheet. Includes Guided Practice)
- Finding Factors (1 of 2)
- Finding Factors (2 of 2)
- Factors – Prime & Composite Numbers (1 of 2)
- Factors – Prime & Composite Numbers (2 of 2)