The purpose of this How Many Do You See? is to build on what students know about place value to make 100, using tens and ones in groups of 25. The progression of the four images demonstrates counting by 25. This work will be important in upcoming lessons, where students combine coins to make 100 cents or 1 dollar.
Launch
Groups of 2
“How many do you see? How do you see them?”
Flash the image.
30 seconds: quiet think time
Activity
Display the image.
“Discuss your thinking with your partner.”
1 minute: partner discussion
Record responses as an expression, using hundreds, tens, and ones.
Repeat for each image.
How many do you see? How do you see them?
Student Response
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Advancing Student Thinking
Activity Synthesis
“Let’s say the value represented by the images in order.” (25, 50, 75, 100)
“What pattern did you notice when combining the groups of the blocks and the value the blocks represent?” (When there were 2 groups of 25, the ones made a new ten, with no ones left over. When there were 3 groups of 25, the ones made a new ten, with 5 ones left over. When there were 4 groups of 25, the ones made 2 new tens, with no ones left over.)
Activity 1
Standards Alignment
Building On
Addressing
2.G.A.1
Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces.Sizes are compared directly or visually, not compared by measuring. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.
The purpose of this activity is for students to learn Stage 2 of the How Are They the Same? center. Students lay six shape cards face up. One student chooses two cards with a common attribute. They show the cards to the group without saying the common attribute. All students draw a different shape that shares an attribute with the two shapes. Then, students take turns sharing the shape they have drawn and the common attribute. Students get a point if they draw a shape that no other student has drawn. Students may find multiple common attributes for the same two shapes. This can lead to an interesting discussion.
Launch
Groups of 4
Give each group a set of cards and multiple copies of centimeter dot paper.
“We are going to learn a new way to play the How Are They the Same? center.”
“You will lay 6 shape cards face up. One member of your group will pick 2 cards that have an attribute in common. They show the cards to the group, without saying the common attribute.”
“Then, all members of the group will draw a shape that has a shared attribute with those 2 shapes. Then, take turns sharing the shape you have drawn and the common attribute. You get a point if you draw a shape that no other person in your group has drawn.”
If needed, play a round with the class.
Activity
10 minutes: partner work time
Monitor for shared attributes that are more challenging for students to notice.
None
Student Response
None
Advancing Student Thinking
Activity Synthesis
Display 2 shape cards.
“What shared attributes do you notice about these 2 shapes? Draw a shape that also has that attribute.”
The purpose of this activity is for students to choose from activities that focus on working with shapes or adding and subtracting within 20.
Students choose from any stage of previously introduced centers.
How Are They the Same?
Capture Squares
Can You Draw It?
Launch
“Now you will choose from centers we have already learned. One of the choices is to continue with How Are They the Same?”
Display the center choices in the student book.
“Think about what you would like to do first.”
30 seconds: quiet think time
Activity
Invite students to work at the center of their choice.
10 minutes: center work time
“Choose what you would like to do next.”
10 minutes: center work time
Choose a center:
How Are They the Same?
Capture Squares
Can You Draw It?
Student Response
None
Advancing Student Thinking
Activity Synthesis
“What did you like about the activities you worked on today?”
Lesson Synthesis
“Today we drew shapes with shared attributes. What shared attributes could you identify more easily? What shared attributes were more challenging for you to notice?”
Standards Alignment
Building On
Addressing
2.NBT.A.1
Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases: