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Subtraction Sentences: True or False? – Learning about subtraction – ‘Taking away’ from a group – If you have 5 apples and eat 2, you have 3 left. – True vs. False sentences – Is 5 – 2 = 3 true or false? – Practice with examples – Let’s try 4 – 1 = 3 and see if it’s true! | Today’s lesson introduces the concept of subtraction as ‘taking away’ from a group. Start by explaining subtraction with simple, relatable examples, like having a certain number of items and removing some. Then, guide the students to understand how to determine if a subtraction sentence is true or false by actually subtracting and checking the result. Provide several examples and encourage the students to solve them. For the activity, have students come up with their own subtraction sentences and test them. This will help reinforce their understanding of subtraction and the concept of true or false equations.

Understanding Subtraction – Subtraction means taking away – Like when we have 5 candies and eat 2, we have fewer candies! – Use a minus sign (-) for subtraction – Example: 5 apples – 2 apples – Start with 5 apples, take 2 away, and count what’s left. – How many apples are left? – It’s like a puzzle to solve with numbers! | This slide introduces the concept of subtraction to first graders by relating it to a tangible experience, such as having a certain number of apples and taking some away. Emphasize the use of the minus sign as the symbol for subtraction. Use the example of apples to show subtraction in a way that’s easy for them to visualize and understand. Encourage the students to think of subtraction as a fun activity, like solving a puzzle, which will help them become more comfortable with the concept. During the class, use physical objects like fruit or counters to demonstrate subtraction in a hands-on manner.

True or False Subtraction Sentences – Equations can be true or false – True equation: 3 – 1 = 2 – When we take 1 away from 3, we have 2 left – False equation: 4 – 2 = 3 – Taking 2 from 4 should leave us with 2, not 3 – Practice with different numbers – Try creating your own true or false equations | This slide introduces the concept of true or false equations in subtraction for first graders. Start by explaining that equations are like sentences in math that can be correct (true) or incorrect (false). Use simple examples to illustrate this concept. For instance, show that when we subtract 1 from 3, the answer is indeed 2, making the equation true. Conversely, demonstrate that subtracting 2 from 4 and getting 3 is incorrect, making the equation false. Encourage the students to practice with different numbers to create their own true or false subtraction sentences. This activity will help them understand the concept of verification in math and improve their subtraction skills.

Let’s Practice Subtraction! – Is 5 – 3 = 2 true? – Counting to find the answer – Let’s use objects to count: start with 5, take away 3. – Understanding subtraction – Subtraction means taking away from a number. – Confirming the true sentence – After taking away 3 from 5, we have 2 left. | This slide is an interactive class activity to help students understand the concept of subtraction and verify the truth of a subtraction sentence. Start by posing the question ‘Is 5 – 3 = 2 true?’ and encourage the students to think about the answer. Then, guide them through a counting activity using objects or their fingers to subtract 3 from 5. Explain that subtraction is like taking away and show that when we take 3 away from 5, we are left with 2, confirming that the sentence is true. This hands-on approach helps solidify the concept of subtraction and the idea of true or false equations. Possible activities include using blocks, drawing on the board, or acting out the subtraction with students as ‘numbers’ being ‘taken away’.

Your Turn to Try: True or False Subtraction – Look at subtraction sentences – Use fingers or objects to subtract – Count backwards using fingers or counters – Find the answer – Decide if true or false – Is the answer correct for the sentence? | This slide is an interactive class activity designed to help first graders practice subtraction and understand the concept of true or false equations. Display several subtraction sentences on the board. Encourage students to use their fingers or classroom objects to physically subtract and find the answers. This tactile approach helps solidify the concept of ‘taking away’. After finding the answer, students will determine if the subtraction sentence on the board is true or false. For example, if the board says ‘5 – 3 = 2’, and they subtract correctly, they should recognize this as true. Provide guidance as needed and ensure each student has a chance to participate. Possible activities include: using different colored objects for subtraction, pairing students to check each other’s work, or having a ‘true or false’ corner in the classroom where they place their answers.

True or False Subtraction Game – Play a game with subtraction sentences – Listen to the sentence I say – Show ‘true’ with thumbs up or ‘false’ with thumbs down – Let’s see who gets the most right! | This interactive class activity is designed to help first graders practice their understanding of subtraction sentences and true or false equations. The teacher will read aloud subtraction sentences, and students will respond with a thumbs up for true or a thumbs down for false. This activity encourages active participation and quick thinking. Possible variations of the activity could include students writing their own subtraction sentences for peers to solve, using flashcards with subtraction problems, or having students work in pairs to create a true or false quiz for each other. The goal is to create a fun learning environment while reinforcing the concept of subtraction and equation validity.

Mastering Subtraction Sentences – Celebrating our subtraction skills – Subtraction means taking away – Like 5 apples – 2 apples leaves us with 3 apples – Practice leads to perfection – Keep practicing subtraction at home! – Try with toys or snacks to make it fun! | This slide wraps up the lesson on true and false subtraction sentences. It’s a moment to congratulate the students on their hard work and understanding of the concept. Subtraction should be reinforced as the idea of ‘taking away’ from a group. Encourage students to continue practicing at home, using everyday items to visualize the process. Remind them that practice is key to becoming confident in their subtraction skills. Suggest that parents involve practical subtraction exercises in daily routines, like counting toys during cleanup or snacks during meal times, to further reinforce the concept.