Density & Buoyancy Investigations
Predict and test which objects float, then explain why with density.
Materials
4 materials1
Photo prompt
2
Lesson slides
3
Group task sheet
4
Reflection slip
Lesson plan
4 phases, 42 minGoal
Students can calculate density from mass and volume and predict whether an object will float.
1
Hook & warm-up
Spark curiosity with a quick prompt that connects density & buoyancy investigations to what students already know.
5 min
class
Photo prompt
2
Direct instruction
Introduce the core ideas with a guided walkthrough and clear worked examples.
14 min
class
Lesson slides
3
Guided practice
Students apply the concept in pairs or small groups while the teacher circulates and confers.
18 min
pair
Group task sheet
4
Wrap-up & check
Consolidate the big idea and check understanding with a short exit ticket.
5 min
single
Reflection slip
Interactive materials open in a read-only preview before purchase.
Ratings & comments
Ran it twice this term with very different groups and it held up both times. That is rare.
Noted, I will add a timing warning to the description.
Please do share the translation, that would help a lot of us.
My students loved the hands-on part. The exit ticket gave me exactly the formative data I needed. Highly recommend.
A year down worked for me with the reading swapped for the summary version.
Good to know the hook travels — I will try that.
The assessment rubric alone was worth it. I have reused it across three other lessons since.
Glad it was useful. Let me know how the series goes.
Thanks, this is really helpful feedback.
Sixty-five minutes matches my experience too. I now split it across two shorter periods.