Patterns All Around
Overview
Patterns are the backbone of every algorithm ever written — but long before code, children encounter patterns in clapping games, floor tiles, day and night, and the stripes on a bumblebee. This lesson helps children see patterns, predict what comes next, and build their own. It is the most foundational computational thinking skill, and it requires zero technology.
Background for Parents
A pattern is anything that repeats in a predictable way. For toddlers, we start with the simplest kind:
- AB pattern: red, blue, red, blue, red, blue...
- ABB pattern: clap, stomp, stomp, clap, stomp, stomp...
- ABC pattern: circle, square, triangle, circle, square, triangle...
The key insight is prediction: once a child can look at a sequence and tell you what comes next, they understand the rule that generates the pattern. That's the same mental move as reading a loop in code.
Don't rush to complex patterns. An AB pattern that a child truly owns — can spot it, extend it, create it — is worth more than an ABC pattern they're just copying.
Lesson Flow
Opening: Pattern Hunt (5 minutes)
Walk around the room (or look out the window) and find patterns together. Point them out:
- "Look at the tiles on the floor — white, black, white, black. That's a pattern!"
- "Your shirt has stripes — blue, white, blue, white."
- "Day, night, day, night — even the sun makes a pattern!"
Ask your child: "Can you find a pattern?" Give them time. If they point at something that isn't a pattern, say "That's interesting! A pattern is when the same thing happens again and again." Then point at another clear one.
Core: Build a Pattern (10 minutes)
Step 1: You build, they watch.
Line up blocks: red, blue, red, blue, red...
Say: "Red, blue, red, blue, red... What comes next?"
Pause. Let them answer. If they say "blue!" — celebrate. If they grab a green block, gently say "Let's look at the pattern again: red, blue, red, blue..." and point at each one.
Step 2: You start, they finish.
Lay out: red, blue, red, blue. Push the pile of blocks toward them. "Can you keep going?"
Step 3: They build, you guess.
Say: "Now YOU make a pattern, and I'll try to guess what comes next."
This is the critical step — creating a pattern is harder than copying one. Accept whatever they make. If it doesn't repeat, ask: "What's the rule? Tell me your pattern." Sometimes a 3-year-old's "pattern" is red, red, red, red. That's actually a valid pattern (AAAA). Name it: "Wow, all red! Your rule is: always red."
Practice: Snack Patterns (3 minutes)
Line up snack items in a pattern on a plate: cracker, blueberry, cracker, blueberry.
"Look, I made a pattern with your snack! Can you keep it going?"
Let them extend the pattern. Then they eat it. Learning that you can eat is highly motivating.
Closing: Body Patterns (2 minutes)
Do a clap pattern together:
- Clap, clap, stomp. Clap, clap, stomp. ("What comes next?")
- Pat head, pat tummy. Pat head, pat tummy.
- Make up silly ones: hands up, tongue out, hands up, tongue out.
End with: "Patterns are everywhere. Let's keep finding them today."
Assessment
Not a test — just things to notice:
| Skill | What to Watch For |
|---|---|
| Recognition | Can they point out a pattern you didn't show them? |
| Prediction | Can they correctly say what comes next? |
| Extension | Can they continue a pattern for 3+ cycles? |
| Creation | Can they invent a new pattern (even a simple one)? |
| Naming | Can they describe the rule? ("It goes red then blue then red then blue") |
If your child can do the first two, this lesson landed. The rest will come with repetition.
Adaptations
- Younger (18-24 months): Stick with AB patterns only. Use large objects they can grab. Do it entirely as a shared activity — hand over hand. Clapping patterns work better than objects at this age.
- Older (3-4 years): Try ABB (red, blue, blue, red, blue, blue) or ABC patterns. Add a "pattern breaker" game: build a pattern with one mistake hidden in it — can they find the mistake?
- Nonverbal children: They don't need to say "blue" — pointing, grabbing the right block, or placing it in line all count.
Going Deeper
Once AB patterns are solid (days or weeks later — no rush):
- Growing patterns: 1 block, 2 blocks, 3 blocks... (this connects to early math)
- Sound patterns: Use a pot and spoon. Tap, tap, pause. Tap, tap, pause. Can they continue?
- Story patterns: "Going on a Bear Hunt" and similar repetitive books are pattern literature. Point it out: "The words repeat! That's a pattern in the story."
- Music: "Twinkle Twinkle" verse, chorus, verse, chorus. "Head Shoulders Knees and Toes" repeats the same pattern faster each time.