Geometry: Angles All Around Us
Find and measure angles around the classroom in a movement-based discovery lesson.
Materials
5 materials1
Slides
23
Protractor template
2
anchor chart
3
Recording sheet
4
Class chart
Lesson plan
4 phases, 40 minGoal
Students can measure angles with a protractor and classify them as acute, right, obtuse or straight.
1
Warm-up: angle guess
Estimate the size of projected angles and reveal the answers.
6 min
class
Slides
2
Mini-lesson: types of angles
Define acute, right, obtuse, and straight and model using a protractor.
10 min
class
Protractor template
anchor chart
3
Angle hunt
Students roam to find and measure five real angles, recording each.
19 min
pair
Recording sheet
Protractor template
4
Share findings
Add the smallest and largest angles found to a class chart.
5 min
class
Class chart
Interactive materials open in a read-only preview before purchase.
Ratings & comments
The timing note says 50 minutes but it took us closer to 65. Worth budgeting the extra.
Students who normally disengage were arguing about the data by minute ten. I will take that.
That is a fair point about the sourcing — I have listed two substitutes in the materials now.
The differentiation notes are what sold me — I could stretch the fast finishers without writing anything extra.
A year down worked for me with the reading swapped for the summary version.
Setup was about ten minutes for me once the materials were out on the bench.
Sixty-five minutes matches my experience too. I now split it across two shorter periods.
Totally agree, the wrap-up is the strongest part.