These are invented diagrams, never real sales, bookings, plant counts or travel information. One long strip holds exactly ten printed marks; the hundred square holds exactly ten verified strips. Use paper strips, large marks, a tactile mat, numeral cards or an adult moving pieces as you direct. Explain how much one full group is worth. Choose one card now; your teacher may save another for a later check. The words can be read to you without giving away the mathematics.
| Day | A | B | C |
|---|---|---|---|
| 21 | Book-cover plan: nine rows of ten tiny cover icons and one loose icon. Show the total. | Paper garden poster: nine strips of ten leaf symbols plus four loose symbols. Which of A/B has more? | Puzzle drawing: nine strips of ten piece marks and five extra marks. Show the amount, remove two extra marks and name the new amount. |
| 22 | Costume-board plan: nine rows of ten blank tag marks and seven extra marks. Show 97 and count on. | Music graphic: nine groups of ten beat boxes and nine more. Add one box, then trade. | Building-game screen sketch: ten full strips of ten block icons. Show the same amount with one hundred square and name the number immediately before it. |
| 23 | Library label art: one hundred-square diagram plus one spare title icon. | Seed packet illustration: one hundred-square diagram plus four loose seed marks. Compare with A. | Tactile-map design: one hundred-square model plus five loose raised-dot marks. Show the same amount with ten strips and five loose marks; find a number between 102 and 105. |
| 24 | Stage-seat drawing: hundred-square plan plus seven spare seat symbols. | Repair-bench diagram: hundred-square plan plus nine loose bolt icons. Count to the next full ten. | Game-map lights: one hundred-square model plus one full ten-strip. Show 110 a second way. What must you change to show 108? |
| 25 | Museum label design: nine strips of ten exhibit icons plus three. | Sports-club poster: ten full strips of ten ticket marks. | Reading-corner plan: hundred square plus six loose bookmark marks. Order A/B/C using their quantities. |
| 26 | Pattern-board display: hundred square, one strip of ten, one loose dot. | Community-art mock-up: hundred square, one strip of ten, four loose square marks. Compare with A. | Board-game path: hundred square, one strip and five loose path dots. Make it, then remove two loose dots. |
| 27 | Paper theatre plan: hundred square, one strip and seven extra seat marks. | Drawn harbour map: hundred square, one strip and nine paper boat icons. Add one and trade. | Recipe-card design: twelve verified ten-strips of blank symbol marks. Show the same amount as a hundred square plus two strips, and name one less. No food preparation is needed. |
| 28 | Sound editor diagram: nine full strips of ten beat boxes plus six. Mark its place on the line. | Toy-route board: hundred square, one strip and two path dots. Locate it and compare with A and 107. | Library display: hundred square, one strip and nine cover icons. Put it on the line; name a different number between 112 and 119. |
| 29 | Maker-grid sketch: hundred square plus four loose shape marks. Show a second equal model. | Classroom mural draft: hundred square, one strip and eight loose colour symbols. Show it with only ten-strips and ones. | Star-map art: twelve ten-strips of star marks. Explain an equal hundred-based model and its chart position. |
| 30 | Game-score marks: nine strips of ten blank marks plus seven. | Book-fair floor-plan symbols: hundred square plus nine loose book icons. | Rhythm-card sequence: hundred square, one strip and five loose beat marks. Choose two to model; order all three totals. |
Change the representation, keep the amount
For any card, try a second model: ten strips can become one hundred square, or the square can be reopened as ten strips. A strip can become ten singles. The value stays the same only if the replaced pieces are removed from the mat. Ask a partner to make a deliberately wrong model by leaving both versions on the mat, then show exactly what must be removed. On a line, agree which side is increasing before placing a card.
Rights: Original fictional cards © NeuroForgeIO Pty Ltd 2026, CC BY 4.0. The icons do not represent real-world quantities or claims.