๐ Teaching Subtraction of One with Objects and Pictures
This lesson plan provides a structured approach to teaching young children how to subtract one from a number using tangible objects and visual aids. The focus is on building a concrete understanding before moving to abstract concepts.
๐ฏ Objectives
- ๐ Students will be able to identify one less than a given number within the range of 1-10.
- ๐๏ธ Students will be able to demonstrate subtraction of one using objects.
- ๐ผ๏ธ Students will be able to represent subtraction of one using pictures.
- ๐ฌ Students will be able to verbally explain the process of subtracting one.
๐๏ธ Materials
- ๐งธ Variety of small manipulatives (e.g., counters, blocks, toys)
Whiteboard or chart paper
Worksheets with pictures for subtraction problems- ๐๏ธ Crayons or markers
- ๐ข Number cards (1-10)
๐ฅ Warm-up Activity (5 minutes)
- ๐ฃ๏ธ Counting Review: Start by counting from 1 to 10 as a class. Then, count backward from 10 to 1.
- ๐๏ธ Show Me One Less: Hold up a number card (e.g., 5). Ask the students to show you one less using their fingers.
๐จโ๐ซ Main Instruction (20 minutes)
- ๐งธ Using Objects:
- โ Begin with a concrete example. Place 4 blocks on a table.
- โ Explain: "We have 4 blocks. If we take away 1 block, how many are left?"
- ๐ค Demonstrate removing one block. Count the remaining blocks together (3).
- ๐ Repeat with different numbers of blocks (up to 10). Encourage students to come up and physically remove the blocks.
- ๐ผ๏ธ Using Pictures:
Distribute worksheets with pictures (e.g., a row of apples).- ๐๏ธ Instruct students to cross out one picture in each row.
- โ๏ธ Ask them to count the remaining pictures and write the number below the row.
- โ Example: A row of 6 apples. Cross out 1. How many are left? (5)
- ๐ฌ Verbal Explanation:
- ๐ฃ๏ธ Encourage students to explain in their own words what it means to subtract one.
- โ Ask questions like: "What happens to the number when you subtract one? Does it get bigger or smaller?"
- ๐ก Facilitate a class discussion to reinforce the concept.
๐ Assessment (10 minutes)
- โ๏ธ Worksheet Practice:
- ๐ Provide a worksheet with a variety of subtraction problems (e.g., 5 - 1 = ?, 8 - 1 = ?).
- ๐๏ธ Students can use pictures or objects to help them solve the problems.
- โ
Observation:
- ๐ Observe students as they work to assess their understanding of the concept.
- โ Ask individual students to explain their thinking process.
โ Extension Activities
- ๐ฒ Subtraction Game: Use a die. Have the child roll the die and then subtract one from that number.
- ๐ Real-Life Subtraction: Use everyday objects (e.g., snacks, toys) to create subtraction scenarios.
โญ Differentiation
- โ Support: Provide one-on-one support for students who are struggling. Use more hands-on activities and visual aids.
- ๐ Challenge: Introduce subtraction of numbers greater than one for advanced students.