Discovering Discovering Parallelograms Parallelograms

Lessons 2-3: Parallelograms (2 days)
Objectives: SWBAT
1. Construct a parallelogram using CabriJr App.
2. Use CabriJr tools to explore prope rties of a parallelogram
3. Make conjectures about properties of a parallelogram, including
opposite sides,
angles, and diagonals
4. Test conjectures and summarize findings
Materials:
• TI-84+ calculators (classroom set), with CabriJr App.
• Parallel ogram lab. Activity
Procedure:
I. Day1 –
Introduce lab activity. Relate activity to previous CabriJr
labs. (students have already constructed segments,
parallel/perp. lines, angles, triangles, etc). Screen captures
are included as visual aids.
activities/further
Instruct students to save sketches for Day 2
exploration.
II. Day 2- 2 Continue lab activity. Allow time for completion (this
could run into 3 days)
III. Summary/Closure: Discuss lab. findings. Student s will make a
list of
Parallelogram properties in their notes.
10