How Many Do You See?
10 min
Narrative
The purpose of this How Many Do You See? is to allow students to use subitizing or grouping strategies to describe the images they see. In the Activity Synthesis, discuss what students know about the How Many Do You See? routine and what they need to think about to create a routine like the example.
Launch
- Groups of 2
- “How many do you see? How do you see them?”
- Flash the image.
- 30 seconds: quiet think time
Teacher Instructions
- Display the image.
- “Discuss your thinking with your partner.”
- 1 minute: partner discussion
- Record responses.
Student Task
How many do you see? How do you see them?
Sample Response
36. Sample responses:
- I see 9 groups of 4 dots. I see 4 groups on each side and 1 group in the middle.
- I counted 2 groups in the upper left corner as 2, 4, 6, 8, and saw that there were 4 groups like that, plus 1 extra 4, so 4×8+4=36.
- I saw 4×4 in the top half and another 4×4 in the bottom half, plus 4 in the middle. That's 16+16+4, which is 36.
Activity Synthesis (Teacher Notes)
- “What do you know about the How Many Do You See? routine?" (They have dots arranged in groups that make the dots easier to count. There are many different ways to count the dots.)
- Consider asking: “What would you have to think about if you were going to design a How Many Do You See? like this one?” (How the dots are organized. How to create groups of dots that are easy to count. Different ways that the dots could be seen.)
- Record and display responses for all to see.
Standards
Addressing
- 3.OA.1·Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. <em>For example, describe a context in which a total number of objects can be expressed as 5 × 7.</em>
- 3.OA.A.1·Interpret products of whole numbers, e.g., interpret <span class="math">\(5 \times 7\)</span> as the total number of objects in 5 groups of 7 objects each. <span>For example, describe a context in which a total number of objects can be expressed as <span class="math">\(5 \times 7\)</span>.</span>
20 min
15 min
Knowledge Components
All skills for this lesson
No KCs tagged for this lesson
How Many Do You See?
10 min
Narrative
The purpose of this How Many Do You See? is to allow students to use subitizing or grouping strategies to describe the images they see. In the Activity Synthesis, discuss what students know about the How Many Do You See? routine and what they need to think about to create a routine like the example.
Launch
- Groups of 2
- “How many do you see? How do you see them?”
- Flash the image.
- 30 seconds: quiet think time
Teacher Instructions
- Display the image.
- “Discuss your thinking with your partner.”
- 1 minute: partner discussion
- Record responses.
Student Task
How many do you see? How do you see them?
Sample Response
36. Sample responses:
- I see 9 groups of 4 dots. I see 4 groups on each side and 1 group in the middle.
- I counted 2 groups in the upper left corner as 2, 4, 6, 8, and saw that there were 4 groups like that, plus 1 extra 4, so 4×8+4=36.
- I saw 4×4 in the top half and another 4×4 in the bottom half, plus 4 in the middle. That's 16+16+4, which is 36.
Activity Synthesis (Teacher Notes)
- “What do you know about the How Many Do You See? routine?" (They have dots arranged in groups that make the dots easier to count. There are many different ways to count the dots.)
- Consider asking: “What would you have to think about if you were going to design a How Many Do You See? like this one?” (How the dots are organized. How to create groups of dots that are easy to count. Different ways that the dots could be seen.)
- Record and display responses for all to see.
Standards
Addressing
- 3.OA.1·Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. <em>For example, describe a context in which a total number of objects can be expressed as 5 × 7.</em>
- 3.OA.A.1·Interpret products of whole numbers, e.g., interpret <span class="math">\(5 \times 7\)</span> as the total number of objects in 5 groups of 7 objects each. <span>For example, describe a context in which a total number of objects can be expressed as <span class="math">\(5 \times 7\)</span>.</span>