Estimation and Classification

For students of kindergarten to 1st grade.

Subject:  Math  
Grades: 1  
B Armstead

Subject/ Topic: Math/ Estimation and Classification
Grade Level: 1st Grade
Objectives: Students will be able to:
1) estimate the number of each color of kittles provided in a bag.
2) predict the color that will be most.
3) sort Skittles according to color.
4) count the number of Skittles for each color given.

Materials: Skittles
Baggies of Skittles
Recording Sheets 

A) Estimated Time Set (10 minutes)
Students will sit in a large circle. The teacher will pour a bag of Skittles out on the floor. The children will identify the colors and guess which color there is the most. Then they will guess how many of each color there are. Then discuss how close the students were to being correct in their estimates.

B) Activity (30 minutes)
1. Assign students to pairs.
2. Give each pair a baggie of Skittles, a recording sheet, and a pencil.
3. Tell the students to look at their bag of Skittles and guess which color has the most pieces. Circle that color on their recording sheet.

4. The students estimate a number from one to ten for each color in their bag and write that number on the recording sheet by each color.
5. The students will sort the Skittles by color and place them horizontally in the allotted space on the recording sheet.
6. The students will count their Skittles one color at a time and place each total in the provided space on the recording sheet.
Note: The teacher will walk around to assist students and ask questions, such as: How many more would you need to get your estimation? Why did you think that blue had the most? How many more would you need of green to have what you estimated? Was your estimate of yellow more or less than what you counted?

C) Practice (30 minutes) Have the students select baggies of different items from a table. Have the students estimate the number of items by different attributes and check their estimates. Baggies might include buttons, attribute blocks of one color, the animal manipulative in various sizes, and a couple of baggies with more than one attribute.
D) Closure (20 minutes) Discuss how the students determined their estimates. Write down any strategies students recognize. Ask how they determined if their estimates were right, close, or wrong. Discuss other things that they could sort and estimate in the classroom or on the playground. Read A Counting Book before dismissing the students.

Observe the students as they work with the Skittles and recording sheets. Do the students display an understanding of estimation and classification by a single attribute?
Document the level of understanding for each area and how it was displayed by each student.

Lesson Plan used from-
Activity created by Pam Blake and Heather Cleek on HotChalk Lesson Plans Page.