Place a decimal length on the line
Connect a recorded decimal length to its independent position from zero.
Explore this lesson →9 practice questions · Optional read aloud · Thinking pad
Let’s understand the idea.
- The line measures distance from zero in metres.
- Ten equal hundredth intervals make a tenth of a metre, even in an enlarged view.
- Changing a line window does not change the length or automatically place its marker.
Something to notice
Ask the learner to explain the whole, tenth and hundredth in a fresh example. For a line, ask what zoom changes and what stays one metre. Observe their marker separately from their written entry. Child, educator, physical, oral and retained-learning evidence remains pending.
Try it. Change it. Explain it.
Open the lesson to use its pictures and controls. In How it works, connect the picture to the idea. In Play & discover, change the quantities and notice what stays the same. In Your turn, answer questions and use the explanation to check your reasoning.
You can ask for help, draw on the thinking pad, or listen to the question and answer options. Progress distinguishes independent work from work completed with help.
Let’s try it →Curriculum connection
Grade 4 · 4.NF · US Common Core
This lesson is mapped to these standards. A completed activity is practice evidence, not a claim of mastery. Content is checked against the linked official standards and its mathematical models are tested.