Architecture of Grace
Mathematics · Number Concepts & Data

Number Concepts & Data

Concepts & Data · Activity 7 — Make It Even. Move blocks until every tower matches, or print it and use a pencil — both count.

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Concepts & Data · Activity 7

Make It Even

Some towers have more. Some have less. Move blocks until every tower matches — the height they all share has a name: the mean, or the average.

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No score is kept. No points, no streak, no ranking — the only number anyone writes down is the one your teacher writes down, standing next to you.

Make each set of towers even: cross out blocks from the tall ones and draw them on the short ones. When every tower matches, that height is the mean. For 7 and 8, use the shortcut — add them all, then divide by how many.

  1. 1 Books read this week · Libros leídos esta semana Mia5 Leo1 Sol3 Kai3 Mean · Media =
  2. 2 Goals scored at recess · Goles anotados en el recreo Mia7 Leo3 Sol5 Kai5 Mean · Media =
  3. 3 Cans collected for recycling · Latas juntadas para reciclar Mia2 Leo6 Sol3 Kai5 Mean · Media =
  4. 4 Laps run in gym · Vueltas corridas en educación física Mia8 Leo4 Sol5 Kai2 Zoe6 Mean · Media =
  5. 5 Pages read today · Páginas leídas hoy Mia1 Leo5 Sol2 Kai4 Zoe3 Mean · Media =
  6. 6 Stickers earned · Calcomanías ganadas Mia6 Leo2 Sol7 Kai3 Zoe2 Mean · Media =
  7. 7 Points in a game · Puntos en un juego — the shortcut · el atajo 3 + 5 + 4 = ÷ 3 = Mean · Media =
  8. 8 Shells found at the beach · Conchas encontradas en la playa — the shortcut · el atajo 7 + 1 + 4 + 8 = ÷ 4 = Mean · Media =
How confident are you with these?

There is no right answer here. It only tells your teacher where to start next time.

For the teacher — this device only

One probe row, built from what happened on this screen. Nothing leaves this device on its own — copy the row yourself, or print this page. Independent means made even with no hints; supported means after a hint. Both are real evidence and neither is a grade.

Date
—
Skill
Find the mean of a small data set
Measure
Trials (x of y)
Independent
0 of 8
Supported
0 of 8
Hints used
0
Confidence
—
Watched the demo
—
Stretch
—

Items 1–6 level the towers; items 7 and 8 use the shortcut — add them all, then divide. Set 2 and Set 3 are the same eight skills with different numbers, so the same student can be probed three weeks running without being measured on memory.

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