Two free number line games, three scales
A number line connects a number with a position. In Read the marker, look at the labelled endpoints, follow the equally spaced ticks and choose the marked number. In Place the number, move a marker onto the tick for the requested value. Choose a scale from zero to ten, zero to twenty or zero to one hundred. Each mode and scale has its own eight-question practice route.
There is no countdown, speed score or limit on attempts. Check my answer gives feedback without moving the question. An incorrect answer stays available to try again; a correct answer waits until you choose Next challenge. This is whole-number practice, rather than a timed approximation game.
Read the gaps between ticks
Every line here has ten equal intervals. On the zero-to-ten scale, each gap is one. On zero to twenty, each gap is two. On zero to one hundred, each gap is ten. The endpoints and midpoint are labelled, so you can count from a known value and check the size of each interval.
Count the spaces you cross, rather than counting zero as the first step. On a scale from zero to twenty, three gaps after zero gives six: two, four, six. Five gaps reach the midpoint, ten. An interior tick does not always mean one more; its value depends on the scale.
Read the marker
A blue marker points to one tick. Choose one of four whole-number answers, then check. Its position is exact; you do not need to estimate a point between ticks. The marker changes between questions, while the chosen scale and interval remain consistent within the route.
Place the number without a drag requirement
Use the slider to choose a tick. Its marker and written position move together. Back and Forward buttons move exactly one interval, offering an alternative to dragging. With a keyboard, focus the native slider and use arrow keys; Home and End move to the endpoints. Tab also reaches the step buttons and Check my answer.
Choosing a position does not submit it. Take time to compare it with the printed labels, then check. On a scale to one hundred, moving forward one gap adds ten; the step buttons say the actual change.
Help, saving and completion stickers
Read the scale with help provides a written description, including the marked interval in the reading activity. This can reveal the answer. Stickers reward completing supported practice; they are not an assessment of independent understanding.
The six routes save separately in this browser. Change activity keeps an unfinished question and answer. Reopen the page and choose Continue activity to return. Finishing eight challenges earns that mode-and-scale sticker in your sticker book. Try a new set replaces only the chosen question set, retaining earned stickers. If saving is unavailable, the game explains that progress lasts only for the current visit.
Use a number line to explain your thinking
Ask why a marker belongs at its position, what changes when the endpoint changes, or how many equal jumps connect zero with the chosen number. The activities cover selected whole-number recognition and scale-reading skills. They do not cover negative numbers, decimals, fractions on number lines or all place-value objectives.
For visible counting before scale reading, try untimed dot counting. To connect positions with calculations, try addition practice. Fraction Workshop explores equal parts of a whole using bars.
To compare distances and choose the nearest ten, hundred or thousand, try Rounding Workshop: free exploration and eight saved practice routes.
For reflections across vertical, horizontal and diagonal mirror lines, try Symmetry Workshop: 36 pattern challenges and saved free drawing.
To read centimetres and millimetres or find a strip’s length from its two endpoints, try Measuring Workshop: four saved routes and a ruler explorer.