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Welcome to Subtraction! – Learn to take away with subtraction – Subtraction shows how many are left – If you have 5 apples and eat 2, subtraction tells us 3 are left. – Use pictures for subtraction problems – Visual aids make it easier to see subtraction in action. – Practice with subtraction examples – We’ll solve problems like 10 – 4 using images of objects. | This slide introduces first graders to the concept of subtraction as a means of determining how many items remain after some have been taken away. Emphasize that subtraction is not just about numbers; it’s about understanding the concept of ‘taking away’ from a group. Use pictures to illustrate subtraction problems, as visual learning at this age is very effective. For example, show an image with a certain number of items, remove some, and then ask the students to count how many are left. Encourage the students to draw their own pictures to solve subtraction problems and share their drawings with the class. This will help them better grasp the concept and make learning fun.

Understanding Subtraction – Subtraction means taking away – Imagine you have 5 apples and you give 2 away. Now you have 3. – Numbers get smaller when we subtract – If you start with 10 balloons and 4 fly away, you have 6 left. – It’s like eating some of your cookies – Say you have 8 cookies and you eat 3, how many are left? – We use subtraction in word problems | This slide introduces the concept of subtraction to first graders by relating it to a tangible experience like eating cookies. Explain that subtraction is simply the process of taking some away from a larger group, which makes the group smaller. Use everyday examples to illustrate this point, such as sharing snacks or playing with toys. Emphasize that subtraction is not just about numbers; it’s about understanding how the quantity of things changes. Encourage students to visualize the process with real objects or pictures to help them grasp the concept. Prepare to show how these ideas apply to solving word problems by using subtraction sentences.

Understanding Subtraction Words – ‘Minus’ means subtraction – ‘Less’ also means take away – ‘Take away’ is subtraction – Let’s see examples together! – If you have 5 apples and ‘take away’ 2, you have 3 apples left. | This slide introduces students to the key vocabulary associated with subtraction: ‘minus’, ‘less’, and ‘take away’. These terms are used interchangeably to indicate subtraction in word problems. It’s crucial to ensure that students understand these terms represent the action of removing items from a group. Use visual aids like pictures or physical objects to demonstrate subtraction. For example, show a picture of 5 apples, then ‘take away’ 2, and count how many are left. Encourage students to use these words in sentences to describe subtraction problems. During the class, ask students to come up with their own examples using items in the classroom or from their imagination to solidify their understanding.

Subtraction with Pictures: Apples Example – Pictures show subtraction visually – Example: 5 apples minus 2 – Start with 5 apples, take 2 away – Cross out 2 apples – Visualize taking away by crossing out – Count the remaining apples – How many apples are left uncrossed? | This slide is designed to help first graders visualize the concept of subtraction using pictures. By presenting a simple word problem involving apples, students can see the practical application of subtraction. The act of crossing out apples helps them understand that subtraction means taking away. After crossing out, they count the remaining apples to find the answer. This hands-on activity can be replicated with different items to reinforce the concept. Encourage students to draw their own pictures and cross out items to solve subtraction problems. This visual method supports their comprehension of subtraction as they begin to transition to solving problems without pictorial aids.

Writing Subtraction Sentences – Subtraction sentence elements – Numbers, a minus sign, and an equals sign make a subtraction sentence. – Example: 5 apples – 2 – If you have 5 apples and take away 2, the sentence is 5 – 2 = 3. – Equals sign shows result – The number after the equals sign shows how many apples are left. – Practice with pictures – Use pictures to visualize taking away items and writing the sentence. | This slide introduces the concept of writing subtraction sentences. Start by explaining the components of a subtraction sentence: numbers, a minus sign, and an equals sign. Use a simple and relatable example, such as subtracting apples, to illustrate the concept. Emphasize that the number after the equals sign represents the remaining quantity. Encourage students to practice by using pictures to help them visualize the subtraction process and to write their own subtraction sentences. Provide various picture-based word problems for them to solve, ensuring they understand the concept of ‘taking away’ and how it relates to the subtraction sentence.

Let’s Practice Subtraction with Balloons! – Start with 10 balloons – Imagine 3 fly away – Draw and cross out 3 balloons – Use a picture to help visualize – Write the subtraction sentence – 10 balloons – 3 balloons = 7 balloons | This slide is an interactive class activity designed to help first graders understand subtraction through visualization and practice. Begin by presenting the problem about having 10 balloons and losing 3. Encourage the students to visualize the balloons and then draw them on paper or the board. As a group, cross out 3 balloons to represent the ones that flew away. This visual aid will help them grasp the concept of subtraction by physically removing items. After the drawing exercise, guide the students to write the subtraction sentence: 10 – 3 = 7. This reinforces the concept that subtraction is taking away. During the next class, review the exercise and encourage students to share their drawings and subtraction sentences. This hands-on approach helps solidify their understanding of basic subtraction.

Your Turn to Try: Subtraction Stories – Look at the picture story – Draw and cross out items – If 5 apples and 2 are eaten, draw 5 apples and cross out 2 – Write the subtraction sentence – From the drawing, write the math: 5 – 2 = 3 – Share your answer with the class | This slide is an interactive activity for students to apply their understanding of subtraction in a fun and engaging way. Show them a picture with a simple story, for example, ‘5 apples on the table and 2 are taken away to eat.’ Have the students draw the scenario and visually cross out the items that are taken away. Then, they should write the corresponding subtraction sentence based on their drawing. This exercise helps to reinforce the concept of subtraction as ‘taking away’ and allows students to practice writing subtraction sentences from visual cues. Encourage students to explain their thought process as they share their answers with the class. This will help in assessing their understanding and in providing immediate feedback.

Class Activity: Subtraction Storytime – Create subtraction stories with toys – Each student tells their story – Take turns removing toys – Write subtraction sentences together | This interactive class activity is designed to help first graders understand subtraction through storytelling. Provide a variety of toys for the children to use and encourage them to be creative with their stories. As each child takes their turn, they will physically remove a number of toys and narrate their subtraction story to the class. After the story is told, guide the class to write the corresponding subtraction sentence on the board. For example, if a student starts with 5 toy cars and takes away 2, the subtraction sentence would be 5 – 2 = 3. This hands-on approach helps students visualize the subtraction process and reinforces their understanding of the concept. Possible variations of the activity could include using different sets of toys, incorporating props to create more elaborate stories, or pairing students to create collaborative stories.