Week 04 · Factors, multiples and patterns
Number Hunt
Number Hunt
// Factor pairs, primes and number rules
⏱ about 15 min
Saturday: Number Hunt
Samantha and Bennie go looking for arrays around the meadow.
"An egg carton is an array," says Bennie.
"It has 2 rows of 6 eggs. That is a factor pair of 12!"
Samantha spots a window with 3 rows of 4 panes.
"Another factor pair of 12," she says.
Then they find a fence with 7 posts in one long row.
"Seven can only be one row," says Samantha. "It is prime!"
Hunt for factors and multiples
Look around your home with a grown-up for things in equal rows.
Count the rows and how many are in each row.
Write the factor pair and the product.
Try it: Number Hunt
Look for arrays, like egg cartons, windows or tiles.
Write each one as a factor pair, like 2 × 6.
Is the product prime or composite?
Find one thing that comes in a multiple of 5.
Write each one as a factor pair, like 2 × 6.
Is the product prime or composite?
Find one thing that comes in a multiple of 5.
WHAT DID YOU LEARN?
- Read the question.
- Tap your answer.
An egg carton has 2 rows of 6. Which factor pair is that?Which is a factor pair of 12?
Is 7 prime or composite?
Is 35 a multiple of 5?
◇ ARRAY HUNT
Each of you finds three arrays at home.
Write a factor pair for each one.
Trade lists and check each other by multiplying.
Find all the factor pairs for one product together.
Write a factor pair for each one.
Trade lists and check each other by multiplying.
Find all the factor pairs for one product together.
Draw an array you found and write its factor pair.
For a grown-up
This week your child found factor pairs and multiples up to 100.
A prime number has exactly two factors: 1 and itself.
Ask them to arrange 12 or 18 objects in equal rows in different ways.
Patterns can show features the rule does not say.
A prime number has exactly two factors: 1 and itself.
Ask them to arrange 12 or 18 objects in equal rows in different ways.
Patterns can show features the rule does not say.
Great hunting! Next week Bruce helps us multiply bigger numbers.