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Welcome to Subtraction! – Greetings and subtraction intro – Today’s focus: Subtracting 4 – Understanding subtraction – Subtraction means taking away from a total. – Practice taking away 4 – Examples: 10 – 4 = 6, 7 – 4 = 3 | Begin the class with a warm welcome and introduce the concept of subtraction as a way of taking numbers away from each other. Emphasize that today’s lesson will focus on subtracting the number 4 from other numbers. Explain subtraction using simple terms and real-life examples, such as having a certain number of apples and giving some away. Provide clear examples of subtracting 4 from different numbers to illustrate the concept. Encourage the students to think of subtraction as ‘taking away’ and use their fingers or objects to practice. Prepare to guide them through several examples and ensure they understand the concept before moving on to independent practice.

Understanding Subtraction: Sharing with Friends – Subtraction means taking away – Imagine 4 apples, give 1 away – If you start with 4 and give 1 to a friend, you subtract 1 from 4. – Subtraction is like sharing – When we share, we give some away, that’s subtracting! – How many apples left? – After giving 1 apple away, we subtract 1 from 4 to find out. | This slide introduces the concept of subtraction to first graders by relating it to a familiar activity: sharing. Start by explaining that subtraction is the process of taking away from a number. Use the example of having 4 apples and giving 1 away to illustrate this concept in a way that’s relatable to the students. Emphasize that when we share something, we are actually subtracting. Ask the students to visualize the apples and the act of giving one away to engage them in active learning. Finally, guide them to answer how many apples are left to reinforce the concept of subtraction. Encourage the students to think of other sharing examples and how it relates to subtracting.

Subtracting 4 from Numbers up to 20 – Use a number line for subtraction – A number line helps us see the subtraction – Start at a number, hop back 4 spaces – For example, start at 10, then hop back to 6 – Find the answer after 4 hops – The number you land on is the answer – Practice with different numbers – Try subtracting 4 from 15, 12, and 18 | This slide introduces the concept of using a number line to subtract 4 from various numbers up to 20. It’s a visual and interactive way for first graders to understand subtraction. Start by explaining how a number line works, then demonstrate with an example, such as starting at 10 and hopping back to 6. Encourage the students to practice with different starting numbers, ensuring they understand that ‘hopping back’ means moving to the left on the number line. Provide several examples and allow the students to come up to the board and try it themselves. This hands-on activity will help solidify their understanding of basic subtraction.

Let’s Practice Together: Subtracting 4 – Subtract 4 from 10 10 – 4 equals 6 – Subtract 4 from 15 15 – 4 equals 11 – Use fingers to count back Hold up 10 fingers, put 4 down – Use objects for counting Take 15 blocks, remove 4 and count | This slide is designed for a hands-on class activity to practice subtraction by subtracting 4 from given numbers. Encourage the students to use their fingers to count back from 10 and 15, subtracting 4 to find the answers. For a more tactile approach, they can use objects like blocks or counters to visually represent the subtraction process. This will help them understand the concept of ‘taking away’ in subtraction. Prepare for different learning styles by having both finger counting and object manipulation available. Offer guidance and ensure that each student is comfortable with the technique they choose. Reinforce the learning by asking students to explain their process and answer.

Subtracting 4 with Objects – Use objects to subtract 4 – Start with 7 crayons – Imagine having 7 colorful crayons in front of you – Take away 4 crayons – Remove 4 crayons from your set – Count how many are left – Only 3 crayons should remain | This slide is designed to help first graders understand subtraction by using tangible objects such as crayons. By physically removing items, students can visually comprehend the concept of ‘taking away.’ Start with a simple example: if we have 7 crayons and we take away 4, we can count the remaining crayons to find the answer. Encourage students to perform this activity with actual crayons or blocks to reinforce the learning experience. This hands-on approach makes abstract concepts more concrete for young learners. After the activity, discuss the results with the class to ensure understanding.

Story Time: Subtracting 4 – Timmy’s cookie story – A fun way to learn subtraction – Started with 12 cookies – 12 is our starting number – Ate 4 cookies – Subtracting the 4 cookies eaten – How many left? – Use fingers or objects to count | This slide introduces subtraction through a relatable story for first graders. Timmy starts with 12 cookies, which is a number within the range of 1-20, suitable for this grade level. After eating 4 cookies, students are prompted to calculate the remaining amount. Encourage them to visualize the story, perhaps using actual cookies or counters to represent the subtraction. This will help them understand the concept of ‘taking away’ in a tangible way. Ask the students to hold up 12 fingers (if they can) and then put 4 down to find the answer. The goal is to make subtraction fun and interactive, reinforcing the concept with a real-world example.

Class Activity: Subtraction Scavenger Hunt – Let’s explore and find items – Count the items in groups – Now, take away 4 from each group – If you found 8 blocks, after subtracting 4, how many are left? – Share what you discovered! | This interactive activity is designed to help first graders practice subtracting 4 in a fun and engaging way. Set up the classroom with various groups of items beforehand. Guide the students to find and count the items, then subtract 4 from the total they counted. Encourage them to use their fingers or physical objects to help them subtract. After the activity, ask the students to present their findings to the class, which reinforces their understanding and allows them to practice their subtraction and social skills. Possible variations of the activity could include subtracting 4 from different starting numbers, using a mix of items to find, or pairing students to work together.

Review and Goodbye! – Recap: Subtracting 4 – We learned how to take 4 away from numbers up to 20. – Student demonstration – Who can come up and show us how to subtract 4 from a number? – Celebrate our learning – Looking forward to next class | This slide is meant to wrap up the lesson on subtracting 4. Start by asking the class what they learned about subtracting 4 to reinforce their understanding. Invite a student to come up to the board to demonstrate a subtraction problem involving 4, which will help solidify the concept for the rest of the class. Praise the students for their hard work and progress today, and let them know you’re excited to see them in the next class. This positive reinforcement will encourage them to look forward to learning more about subtraction.