Keep Your Place in a Longer Line

Supplied materials

• Paper and a pencil; drawing and spoken explanations are welcome. An adult may read directions and options aloud.
• Supplied worked-case record: Draw 11 dots in a line.
• All quantities and shape descriptions are supplied in the worked example and questions; no purchase or personal information is needed.

Learn the idea

A line can hold more objects than you can notice at a glance. Touch or circle one drawing for each number word. The last number you say names the whole group. A crossed dot is a reminder that you already counted it.

Draw the stated line of dots. Count from the left, marking each dot once. Stop at the final dot and say the total; starting again at the other end should give the same total.

Use a small circle to show a dot has been counted. Do not count the same dot again just because it is near another dot. Draw one dot for each object and circle them one at a time.

1. Draw one dot for each object and circle them one at a time.
2. Follow the worked example. Point to each number or shape feature and say what it tells you.
3. Draw the stated line of dots.
4. Try the question and then the three practice questions. Check your answers and explain any change you make.

Check your reasoning

Your answer is temporary and is not saved to an account. Download your current answer before leaving or reloading. Written work on paper or in another app stays in your own file.

Take it further

Make a line of 19 dots. Expected: 19, regardless of which end you start at.

Nothing here is saved to an account or sent to a teacher. The answer download includes your current choice and any checked feedback. It does not include choices from the separate More practice section. Download that section separately.