Problems with Missing Information
10 min
Narrative
The purpose of an Estimation Exploration is to practice the skill of estimating a reasonable answer based on experience and known information.
Launch
- Groups of 2
- Display the image.
- “What is an estimate that’s too high? Too low? About right?”
- 1 minute: quiet think time
Teacher Instructions
- “Discuss your thinking with your partner.”
- 1 minute: partner discussion
- Record responses.
Student Task
Each regular pumpkin in this field weighs between 4 and 10 kilograms.
How many kilograms do you think the giant pumpkin weighs?
Record an estimate that is:
| too low | about right | too high |
|---|---|---|
Sample Response
Sample responses:
- Too low: less than 100 kilograms
- About right: 200–400 kilograms
- Too high: more than 500 kilograms
Activity Synthesis (Teacher Notes)
- “How did you use the image or what you know about pumpkins or other melons to help you make estimates?”
- Consider asking:
- “Is anyone’s estimate less than 100 kilograms? Is anyone’s estimate greater than 500 kilograms?”
- “Based on this discussion, does anyone want to revise their estimate?”
Standards
Addressing
- 3.MD.2·Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem.
- 3.MD.A.2·Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l).<span>Excludes compound units such as <span class="math">\(\hbox{cm}^3\)</span> and finding the geometric volume of a container.</span> Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem.<span>Excludes multiplicative comparison problems (problems involving notions of “times as much”); see Glossary, Table 2.</span>
20 min
20 min
Knowledge Components
All skills for this lesson
No KCs tagged for this lesson
Problems with Missing Information
10 min
Narrative
The purpose of an Estimation Exploration is to practice the skill of estimating a reasonable answer based on experience and known information.
Launch
- Groups of 2
- Display the image.
- “What is an estimate that’s too high? Too low? About right?”
- 1 minute: quiet think time
Teacher Instructions
- “Discuss your thinking with your partner.”
- 1 minute: partner discussion
- Record responses.
Student Task
Each regular pumpkin in this field weighs between 4 and 10 kilograms.
How many kilograms do you think the giant pumpkin weighs?
Record an estimate that is:
| too low | about right | too high |
|---|---|---|
Sample Response
Sample responses:
- Too low: less than 100 kilograms
- About right: 200–400 kilograms
- Too high: more than 500 kilograms
Activity Synthesis (Teacher Notes)
- “How did you use the image or what you know about pumpkins or other melons to help you make estimates?”
- Consider asking:
- “Is anyone’s estimate less than 100 kilograms? Is anyone’s estimate greater than 500 kilograms?”
- “Based on this discussion, does anyone want to revise their estimate?”
Standards
Addressing
- 3.MD.2·Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem.
- 3.MD.A.2·Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l).<span>Excludes compound units such as <span class="math">\(\hbox{cm}^3\)</span> and finding the geometric volume of a container.</span> Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem.<span>Excludes multiplicative comparison problems (problems involving notions of “times as much”); see Glossary, Table 2.</span>