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Subject: Math
Lesson Length: 30 - 40 mins
Topic: Ratios & Proportional Relationships- Ratio & Percentage
Grade Level: 7
Objective: Evaluation
Standards: CCSS.MATH.CONTENT.7.RP.A.3
Standards:
Use proportional relationships to solve multistep ratio and percent problems.
Brief Description: Students will use percentages in order to determine how much to tip while creating a fun, mathematical comic.
Know Before You Start: Students should be familiar with solving multi-step problems involving ratios and percentages. This could serve as an informal assessment mid-unit.
Hook: Independently or with a partner, have students read the comic and work through the steps needed to solve Cirrus’s tipping problem. Regroup as a class to discuss their answers.
Activity:
- Engage students in a discussion about what a tip is and why we give them.
- 20% for superior service
- 15% for adequate service
- 10% for unsatisfactory service
- Ask students for different real-life scenarios where they or their parents have provided someone with a tip.
- Students will create a 3-5 frame comic telling a story about a situation where they need to provide a tip. Students should include:
- The scenario that requires a tip (restaurant, hair cut, car wash, nail salon, Uber/cab ride, etc.)
- The bill total before tip
- The tip percentage
- The tip amount
- The total bill amount including tip
Closure: Share and discuss student comics with the class.
Differentiation:
- Allow students to create more than one scenario for enrichment.
- Provide sentence frames for the story.
- Allow students to use speech-to-text feature for their comic.
- Provide the option for ELL students to tell the story in their home language.
- Provide the bill total for students as needed.
Resources:
- Comic to print or display: Comic 1.
