Stax
Stacking counts into bars makes it easy to see which has more, which has fewer, and how many more
Loading audio…
Press play to listen along. The line being read lights up as you go.
Show full transcript
Loading transcript…
Stax is a busy beaver who never leaves logs in a messy heap. Stax stacks them — all the short logs in one neat tower, all the long ones in another, all the round ones in a third. "A pile tells you nothing," Stax says, patting a tidy stack. "But line the stacks up side by side, and your eyes can see the answer: which is tallest, which is shortest, how many more."
Stax's friend Rue the rabbit dumps out a basket of buttons — red, blue, and yellow, all jumbled together. "I need to know if there are more red or more blue," Rue says, staring at the mess, "but they're all mixed up and I can't tell. It just looks like... a heap." Rue's nose wrinkles in confusion.
"Then let's stack them," says Stax. "One color per stack, side by side, each button sitting right on top of the last." Together they build three little towers: reds in a row, blues in a row, yellows in a row. Suddenly the jumble becomes a neat little chart, each color its own bar.
Rue looks — and the answer is just there, plain as day. "The blue tower is taller! There are more blue!" Rue counts. "Five blue, three red — two more blue than red!" What was a hopeless heap a moment ago is now something Rue can read at a glance. "I can just see it now!"
Rue makes a chart for everything after that — pinecones, acorns, pebbles — stacking each kind into its own bar. The world stops being a confusing jumble and starts making clear, tidy sense. A bright, clear-headed feeling fills Rue up, the satisfying click of confusion turning into an answer. And Stax, well pleased, squares up the little towers so every bar stands straight and true.
Hear it as an audio drama
A short play starring Stax, from MeasurePals. Different voices, same idea. Listen any time after you read.
Loading audio…
Read the drama script
- Narrator: From Spark and Anvil and Measurepals — this is Stax, in chapter 1 of the Measurepals cast.
- Narrator: This drama uses an AI-generated voice. Voiced via Gemini 2.5.
- Narrator: Stax is a busy beaver who never leaves logs in a messy heap. Stax stacks them.
- Stax: All the short logs in one neat tower, all the long ones in another, all the round ones in a third.
- Narrator: A young otter had a big jumbled pile and couldn't tell which kind he had most of.
- Stax: A pile tells you nothing. But line the stacks up side by side, and your eyes can see the answer.
- Narrator: So they sorted the pile into stacks — short, long, round — and lined them up.
- Stax: Now look. Which stack is tallest? The round ones. Which is shortest? The long ones. And how many more round than long? Count the difference — three more.
- Otter: I can just SEE it now!
- Narrator: The mixed-up pile had become a picture that answered itself.
- Stax: That's a bar graph. Stack the counts, line them up, and which-has-more jumps right out. That's what makes Stax, Stax.
- 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: Spark and Anvil is a 501(c)(3) public charity. 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 “Stax: stack the counts into bars and you can SEE which has …” 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 MeasurePals ensemble
Stax is one of the friends in MeasurePals. Each friend shows you one idea by how they act; meet them all and you have the whole subject.
