Proportional Relationships Lesson: Graphs Through the Origin, Grades 7-8

A straight line is not enough. This lesson teaches the two-part graph test for a proportional relationship: the points line up on a straight line, and that line passes through (0, 0). Students plot a table, then decide whether the graph passes.

What's inside

• 18 slides, with speaker notes on all 18
• Lesson plan, 2 pages: standards, materials, objective, a teacher-guided sequence keyed to slide numbers, a "Watch For" note and a 25-minute version
• Scaffolded notes, 1 page, fill-in to match the slides
• Practice worksheet, 2 pages: 16 items
• Exit ticket, 3 questions, two to a sheet
• Answer key, 4 pages, with the steps shown for every item, and the filled-in tables and graphs
• Print-all PDF, 10 pages, the day's lesson plan, notes, practice, exit ticket and answer key in one file

Answer key included

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