Put the story parts together
Represent and solve stories about joining two separate amounts.
Explore this lesson →9 practice questions · Optional read aloud · Thinking pad
Let’s understand the idea.
- Name the same whole or measurement unit for both amounts.
- Identify the two separate quantities that combine.
- Build an equation, find the unknown and include its unit.
Something to notice
Ask the learner to identify each story quantity in the equation. Have them explain why the two parts do not overlap.
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.