science · Grade 7
Use a Particle Model With Care
Compare simplified particle arrangements and distinguish a model from actual particle size.
Find this activity in the Science map
Explore the knowledge outline and its source scope. This unit supports selected ideas.
Learning goals
- Compare simplified particle arrangements and distinguish a model from actual particle size.
Before you begin
Understand the words and representations introduced in the Explore activity.
Age and grade do not measure readiness. Adjust reading or adult support to preserve the intended learning goal.
Follow the sequence
Complete practice
Practice previewUse a Particle Model With Care
Practice · Independent · 25 min
Compare simplified particle arrangements and distinguish a model from actual particle size. A complete set with exploration, practice and application. Use the linked unit for the learning sequence and teaching guide.
1. Explore
Practice previewUse a Particle Model With Care: Explore and Explain
Explore · Independent · 10 min
Compare simplified particle arrangements and distinguish a model from actual particle size. A focused learn activity. Use the linked unit for the learning sequence and teaching guide.
2. Practice
Practice previewUse a Particle Model With Care: Practice Independently
Practice · Independent · 10 min
Compare simplified particle arrangements and distinguish a model from actual particle size. A focused practice activity. Use the linked unit for the learning sequence and teaching guide.
3. Apply
Practice previewUse a Particle Model With Care: Apply and Create
Apply · Independent · 15 min
Compare simplified particle arrangements and distinguish a model from actual particle size. A focused apply activity. Use the linked unit for the learning sequence and teaching guide.
Download the unit pack
Numbered activities, separate answer keys and a teaching guide in one ZIP. The pack uses the focused sequence; the complete practice sheet above is an alternative.
Teaching and response guide
- Begin with: Which model allows nearby particles to move past each other?
- Connect the response to: Explain why a gas occupies available container space.
- Ask students to apply the idea: Sketch particle models for solid, liquid and gas.
Watch for: Accepting an answer without checking whether it uses the material and satisfies the requested relationship or criteria.
Check the answer criteria for each task. A supported explanation may have more than one acceptable response. These activities offer evidence to discuss; completing a sheet alone does not establish mastery.