Wriggle
successor
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Wriggle was a caterpillar made of little round segments, all in a row. When Wriggle ate a leaf, something wonderful happened: a brand-new segment popped on at the end. One more bite, one more segment. Wriggle loved counting the new number.
"Three segments," Wriggle said one morning, wiggling each one. Then — munch! — a leaf, and pop, a new segment. "Now four!" Adding one had made the very next number. Three, then one more, then four. It always worked that way.
Sometimes a segment got tired and tucked itself away for a nap. Then Wriggle had one less. "Four... take one away... three." One more grew the number up. One less shrank it down. Wriggle could go either way, one little step at a time.
Wriggle's friends played the what-comes-next game. "You have five. What's one more?" "Six!" "You have six. What's one more?" "Seven!" Each answer was just the number, plus one. Once you knew the trick, you always knew what came next.
By nightfall Wriggle had munched all day and grown longer than ever. Wriggle counted every segment, slow and happy, right up to the newest one at the tip. Just this morning there had been fewer — and now, one more at a time, there were so many.
Wriggle curled up, warm and long and proud. Tomorrow there would be one more still. And Wriggle already knew exactly what number that would be.
Hear it as an audio drama
A short play starring Wriggle, from TallyTots. Different voices, same idea. Listen any time after you read.
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Read the drama script
- Narrator: From Spark and Anvil and Tallytots — this is Wriggle, in chapter 1 of the Tallytots cast.
- Narrator: This drama uses an AI-generated voice. Voiced via Gemini 2.5.
- Narrator: Wriggle is a caterpillar made of little round segments, all in a row. When Wriggle eats a leaf, something wonderful happens — a brand-new segment pops on at the end.
- Wriggle: One more bite, one more segment! I love counting the new number.
- Narrator: One morning Wriggle wiggled each part.
- Wriggle: Three segments... one, two, three. Then — munch! — a leaf, and pop, a new segment. Now four! Adding one made the very next number.
- Narrator: Three, then one more, then four. It always worked that way.
- Wriggle: And it goes backward too — if a segment tucked away, I'd have the number before. Four take one is three.
- Narrator: A little inchworm wondered what came after five.
- Wriggle: Just add one! Five and one more is six. You always know what's next — it's one more.
- Narrator: The inchworm grinned. One more makes the next number. That's what makes Wriggle, Wriggle.
- Narrator: You've been listening to a Spark and Anvil chapter, written by the Spark and Anvil writing team for ages 9 to 14.
- Narrator: Apps stay free forever.
- Narrator: Curriculum aligned to Common Core and Next Generation Science Standards.
- Narrator: Released under Creative Commons BY-NC-SA 4.0 for educational reuse. Visit Spark and Anvil for the full transcript.
Reading together with a grown-up? A card for the grown-up
For the grown-up: ask one question, then wait. When they answer, add one word to what they said. Tap the button when they have said something — that is one turn each, a circle. Nothing is recorded or kept.
Let them finish it
Say “Wriggle: one more is the very next number, one …” and stop. Let them finish it.
Now wait. Count slowly to five in your head. Their answer is worth the quiet.
Circles together: 0
The TallyTots ensemble
Wriggle is one of the friends in TallyTots. Each friend shows you one idea by how they act; meet them all and you have the whole subject.
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Ribbet
Mental number line / magnitude — a frog who hops the linear 1→10 lily-pad path; farther along IS more (the Ramani–Siegler core)
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Dottie
Subitizing — a ladybug whose back-spots you know at a glance, without counting; instant recognition IS subitizing
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Clutch
Counting / cardinality — a hen who touches each egg once as she counts; the last number IS how many in all
