New names for longer measures
Keep a measured quantity unchanged while its fraction name changes.
Explore this lesson →9 practice questions · Optional read aloud · Thinking pad
Let’s understand the idea.
- One whole keeps the same unit wherever it appears.
- Splitting every piece changes piece size and count together.
- Explain why the endpoint stays fixed.
Something to notice
Invite an independent explanation with a different measured quantity. Observe piece-size/count conservation and the fixed whole. This bank does not certify fresh transfer, oral understanding or physical manipulation.
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.