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Week 10 · Patterns

Tuesday

// What's repeating?

Tuesday: Number Patterns

Rocket hops across stepping stones in the garden. The stones say 2, 4, 6 and 8. The next stone is blank!

"Which number goes here?" Rocket asks. Raven kneels down. "What do you notice about each jump?"

Nova hovers over the stones. "Look at how much each number grows," she hints. Let's find the rule for each number pattern.

Find the rule. Write the next 3 numbers.

2, 4, 6, 8, ___, ___, ___
5, 10, 15, 20, ___, ___, ___
1, 3, 5, 7, 9, ___, ___, ___
100, 90, 80, 70, ___, ___, ___

Sneakier:

1, 1, 2, 3, 5, 8, ___, ___ (each number = sum of previous two)
1, 2, 4, 8, 16, ___, ___ (each number doubles)
Try Without Paper
Look at a brick wall. The bricks are a PATTERN.
Tell a parent what the rule is.

Growing and Shrinking Patterns

Some number patterns grow by adding the same amount. Some shrink by taking away.

Find the jump between two numbers. Then check it with the next two.

FIND THE JUMP
  • Read the question.
  • Tap your answer.
4, 8, 12, 16, ... What is the rule?
30, 27, 24, 21, ... What comes next?
1, 2, 4, 8, ... What comes next?
100, 90, 80, ... What is the rule?
7, 14, 21, 28, ____
2, 5, 8, 11, ____
50, 45, 40, 35, 30, ____
StatementTrue or false?
5, 10, 15, 20 grows by 5 each time.?
9, 7, 5, 3 grows by 2 each time.?
3, 6, 9, 12 is skip counting by 3.?
20, 16, 12, 8 takes away 4 each time.?
WHY THIS EXERCISEChecking the jump twice proves you found the real rule.
The rule is add 3. The pattern starts at 2. What is the 4th number?
WHY THIS EXERCISEA start number plus a rule gives you the whole pattern.
Try it
Walk up some stairs with a grown-up. Hold the rail and go slowly.
Count by twos as you step: 2, 4, 6.
What number will you say on the 10th step?

Quick Check

3, 6, 9, 12, ____
50, 45, 40, 35, ____
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