# 3 Act Math Tasks

## Organized by the Common Core States Standard (CCSS) Initiative

**Not Common Core? Go to Ontario Curriculum alignment**

# Grade 7

## 7.RP.3

**Overall Expectation Description:**

## 7.RP.3 – Grade 7 – Ratios & Proportions

Analyze proportional relationships and use them to solve real-world and mathematical problems.

Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.

## Related 3 Act Math Tasks:

## Fast Clapper

### Will he beat the record?

**Shared By:**

Nathan Kraft

**Math Topic:**

Ratios, Rates, and Proportional Reasoning.

**Common Core State Standard Alignment:**

## R2D2 Post-Its by @MrOrr_geek

### How many post-it notes will it take to fill the board?

**Shared By:**

Jon Orr

**Math Topic:**

Measurement of Area, Proportional Reasoning

**Common Core State Standard Alignment:**

## Gas Guzzler

### What is the cost of gasoline per litre?

**Shared By:**

Kyle Pearce

**Math Topic:**

Ratios and Rates, Rates of Change, Slope, Direct Variation of a Linear Relation, Proportional Reasoning

**Common Core State Standard Alignment:**

## Flaps!

### How fast is the hummingbird flapping its wings?

**Shared By:**

Jon Orr

**Math Topic:**

Rates, Rate of Change, Slope, Speed, Linear Relations

**Common Core State Standard Alignment:**

## Stacking Paper

### How many packages of paper will it take to reach the ceiling?

**Shared By:**

Kyle Pearce

**Math Topic:**

Proportional Reasoning, Linear Relations, Direct Variation, Partial Variation

**Common Core State Standard Alignment:**

## iPhone Charge

### How long does it take to charge the iPhone?

**Shared By:**

Jon Orr

**Math Topic:**

Ratios/Rates, Linear Relations, Direct and Partial Variation

**Common Core State Standard Alignment:**

## Water Balloon Mishap

### How long until it explodes?

**Shared By:**

Jon Orr

**Math Topic:**

Rate, Linear Relations and Direct Variation

**Common Core State Standard Alignment:**

## Baby Beats

### Does the baby have a healthy heart?

**Shared By:**

Kyle Pearce

**Math Topic:**

Ratios, Rates, and Proportional Reasoning.

**Common Core State Standard Alignment:**

## Coin Carpet

### If you were going to carpet the room with a single kind of coin, which would be the cheapest option?

**Shared By:**

Dan Meyer

**Math Topic:**

Solve real-life and mathematical problems involving angle measure, area, surface area, and volume. Analyze proportional relationships and use them to solve real-world and mathematical problems.

**Common Core State Standard Alignment:**

## Dueling Discounts

### Which coupon should I use?

**Shared By:**

Dan Meyer

**Math Topic:**

Analyze proportional relationships and use them to solve real-world and mathematical problems.

**Common Core State Standard Alignment:**

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