Solving Proportions

• Learning Target:
• I can use cross products to determine if a relationship is proportional.
• I can determine the proportion that matches a story problem and use cross products to solve it.

CCSS:

• 7.RP.2 Recognize and represent proportional relationships between quantities.
  • a. Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.

Lesson Video:

Online Practice:

Solving Proportions:

• http://www.ixl.com/math/grade-7/solve-proportions
• Rags to Riches - http://www.quia.com/rr/35025.html
• Proportions Battleship - http://www.quia.com/ba/83811.html
• Dirt Bike Proportions - http://www.arcademicskillbuilders.com/games/dirt-bike-proportions/dirt-bike-proportions.html
• Ratio Stadium - http://www.arcademicskillbuilders.com/games/ratio-stadium/ratio-stadium.html
• Ratio Blaster - http://www.arcademicskillbuilders.com/games/ratio-blaster/ratio-blaster.html
• Ratio Martian - http://www.arcademicskillbuilders.com/games/ratio-martian/ratio-martian.html

Writing and Solving Proportions:

• https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-constructing-proportions/e/writing_proportions