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Welcome to Subtraction! – Subtraction means taking away – We can make numbers smaller – If we have 5 apples and take away 2, we have 3 apples left – Subtraction sentences use ‘-‘ – Example: 6 – 2 = 4 means 6 take away 2 equals 4 – Let’s practice with numbers up to 10 – We’ll do fun activities to learn! | Greet the students warmly to create an inviting atmosphere for learning. Introduce subtraction as a concept of ‘taking away’ to make it relatable and easier to understand. Explain that subtraction makes numbers smaller and introduce the subtraction symbol ‘-‘. Use simple, real-life examples like subtracting apples to illustrate the concept. Encourage participation by setting up interactive activities where students can practice creating subtraction sentences with numbers up to 10. This will help solidify their understanding of the concept through hands-on experience.

Understanding Subtraction – Subtraction means taking away – Like when we have 10 cookies and give away 3, we take 3 away from 10. – Finding out how many are left – If you start with 8 toys and 3 are taken away, how many do you have now? – Example: 5 apples minus 2 – Start with 5 apples, if you eat 2, how many apples are left? – Practice with different numbers | This slide introduces the concept of subtraction to first graders. Begin by explaining that subtraction is like taking some things away from a group and seeing what’s left. Use tangible examples like cookies or toys to illustrate the point. Show them the subtraction sentence for the apple example (5 – 2 = 3) and explain how we arrived at the answer. Encourage the students to think of subtraction in terms of ‘taking away’ and ‘how many left’. After the explanation, engage the students with hands-on practice using different numbers up to 10 to solidify their understanding.

Understanding Subtraction Sentences – Subtraction sentence structure – A subtraction sentence includes numbers and a minus sign (-). – Example: 5 – 2 = 3 – This shows taking 2 away from 5 leaves us with 3. – ‘Difference’ in subtraction – The answer in subtraction is known as the difference. | This slide introduces the concept of subtraction sentences to first-grade students. Begin by explaining that a subtraction sentence is a way to show taking away one number from another using a minus sign (-). Use simple examples like 5 – 2 = 3 to illustrate this point. Clarify that the result of a subtraction sentence is called the ‘difference.’ It’s important to use clear, concrete examples and possibly manipulatives like counters or blocks to help students visualize the concept of ‘taking away.’ Encourage students to create their own subtraction sentences using numbers up to 10 and to find the difference for each.

Let’s Practice Subtraction Together! – I’ll show you a number: 6 – Let’s take away 4 together – Use fingers to subtract – Hold up 6 fingers, then put 4 down – How many are left? – Count the fingers still up | This slide is an interactive class activity designed to help first graders understand subtraction by using their fingers. Start by showing the number 6 to the class and ask them to hold up 6 fingers. Then, instruct them to put 4 fingers down to subtract 4 from 6. Ask the students to count the number of fingers they still have up to find the answer. This hands-on approach makes learning subtraction tangible and easier to grasp. Encourage the students to participate and to help each other if needed. As a follow-up, you can ask students to come up with their own subtraction sentences using numbers up to 10 and repeat the exercise.

Making Numbers with Subtraction – Subtraction makes numbers – Example: Making 4 – To get 4, subtract 1 from 5 or 2 from 6 – Different ways to subtract – Many combinations can make the same number – Practice with other numbers – Try finding ways to make numbers up to 10 | This slide introduces the concept that numbers can be made by subtracting two smaller numbers. Start by explaining that subtraction isn’t just for taking away, but it can also be a fun way to make numbers. Use the examples provided to show how 4 can be made by subtracting 1 from 5 or 2 from 6. Encourage the students to think of subtraction as a puzzle where they find different number pairs that subtract to make the same number. For the activity, have students practice with other numbers up to 10, finding as many subtraction sentences as they can for each number. This will help solidify their understanding of subtraction and number relationships.

Your Turn to Try: Making 5! – Make the number 5 by subtracting – Use numbers 1 to 10 for subtraction – Start with any number from 1 to 10 and subtract another number to get 5 – Find different ways to subtract – How many subtraction sentences can you create? – Share your subtraction sentences – Example: 10 – 5 = 5, 9 – 4 = 5, 8 – 3 = 5 | This slide is an interactive activity for students to practice subtraction within 10. The goal is to create different subtraction sentences that result in the number 5. Encourage students to use various starting numbers between 1 and 10 and find a number they can subtract from it to get 5. This exercise will help them understand that there are multiple ways to reach the same result in subtraction. Provide guidance on how to set up subtraction sentences and ensure they understand the concept of ‘taking away’ from a larger number. For the next class, prepare to discuss the different subtraction sentences students come up with and reinforce the concept that subtraction is about finding the difference between numbers.

Class Activity: Subtraction Bingo! – Let’s play Subtraction Bingo! – Solve subtraction problems – Use subtraction sentences up to 10 – Cover the number on your card – Find the answer on your bingo card – Shout ‘Bingo!’ for a full row | This interactive class activity is designed to help first graders practice subtraction up to 10 in a fun and engaging way. Provide each student with a bingo card that has numbers up to 10. Call out subtraction problems, such as ’10 minus 3′ or ‘6 minus 5’, and have students solve these problems. Once they find the answer, they should cover the corresponding number on their bingo card. The first student to cover a full row horizontally, vertically, or diagonally should shout ‘Bingo!’ and win that round. Encourage students to check each other’s work to promote peer learning. Possible variations of the game could include playing for a full card or creating patterns. This activity reinforces mental math and the concept of subtraction in a playful manner.

Subtraction Success! – Congratulations on learning subtraction! – Subtraction means taking away – If you have 5 apples and eat 2, you have 3 left. – Practice is key to success – Keep practicing subtraction at home! – Try subtracting with toys or snacks! | This slide is meant to celebrate the students’ accomplishment in learning the basics of subtraction. It’s important to reinforce that subtraction is the process of taking away one number from another. Encourage the students to continue practicing at home using everyday items, which will help solidify their understanding of the concept. Provide examples of simple subtraction problems that they can solve with their toys or during snack time. Remind them that the more they practice, the better they will get at recognizing patterns and solving subtraction problems quickly and accurately.