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Math Fun: Learning ‘One Less’ – Welcome to learning numbers! – ‘One Less’ concept – ‘One Less’ means subtracting 1 – Using frames up to 5 – Visual frames show numbers 1 to 5 – Practice with examples – Example: Frame with 4 dots, take 1 away, how many are left? | This slide introduces the concept of ‘One Less’ to Kindergarten students using number frames. Start by welcoming the students to the lesson and explaining that they will be learning about numbers. Introduce the concept of ‘One Less’ as simply taking away one from a group of items. Use number frames to visually represent numbers up to 5, and show how removing one item changes the number. Provide hands-on practice with physical or drawn frames and guide the students to subtract one dot and count the remaining dots. Encourage participation and praise efforts to build confidence in their counting skills.

Understanding ‘One Less’ – ‘One less’ means taking away 1 – Example with 5 apples – If we start with 5 apples and eat one, how many are left? – Eating 1 apple leaves 4 – We had 5, we eat 1, and now we have 4 apples – Practice with different items – Try with toys or crayons to learn ‘one less’ | This slide introduces the concept of ‘one less’ to Kindergarten students using a relatable example of eating an apple. Start by explaining that ‘one less’ means we take away one item from a group. Use physical props like apples to visually demonstrate the concept. After eating one apple out of five, show that there are four apples left, reinforcing the concept of subtraction. Encourage the students to practice with different items to solidify their understanding. The goal is for students to grasp the basic idea of subtraction by one within the context of numbers up to five.

Using Frames to Show ‘One Less’ – Frames show quantity visually – Start with a frame of 5 objects – Fill the frame with counters, blocks, or stickers – Take one object away – Now we have one less, how many are left? – Observe the frame now – We can see there are 4 objects left | This slide introduces the concept of ‘one less’ using frames, which is a visual tool to help Kindergarten students understand subtraction within 5. Begin by explaining that frames can help us count and keep track of objects. Show them a frame filled with 5 objects, such as counters, blocks, or stickers. Then, demonstrate taking one object away and ask the students to observe the change in quantity. Encourage them to count the remaining objects to reinforce the concept that taking one away means we have one less. This activity can be repeated with different numbers of objects up to 5 to solidify their understanding. For the class activity, provide frames and objects for the students to practice with and prepare to guide them through the process of taking one away and counting the remainder.

Let’s Practice ‘One Less’ Together! – Start with 5, take 1 away – If we have 5 apples and eat 1, how many do we have? – Count how many are left – After removing 1, we count the remaining items. – Try with 4 objects – Imagine 4 teddy bears and 1 walks away. – How many now? – We count again to find ‘one less’. | This slide is designed to help Kindergarten students understand the concept of ‘one less’ in a tangible and interactive way. Start by showing them a group of 5 items, then physically remove one and count the remaining items together. Repeat the process with 4 items, ensuring to engage the students in counting after one item is removed. Encourage the students to visualize the subtraction and understand that ‘one less’ means taking away one item from the group. You can use props like apples or teddy bears to make the activity more relatable and fun. Prepare to guide them through the counting process and correct any misunderstandings. This activity will help build their foundational subtraction skills.

Finding ‘One Less’ with Toys – Understanding ‘One Less’ – Compare toy groups – Look at toy groups: 5 teddy bears vs. 4 teddy bears – Find ‘One Less’ in class – Search the classroom for items in smaller groups – Practice with examples – Use blocks or counters to subtract one and find the answer | This slide is aimed at helping Kindergarten students understand the concept of ‘One Less’ through interactive and relatable examples. Start by explaining that ‘One Less’ means taking away one from a group. Show them pictures of groups of toys and ask them to identify which group has one toy less. Encourage the students to look around their classroom to find examples of ‘One Less’, such as one less chair or one less crayon in a box. Provide hands-on practice with manipulatives like blocks or counters to reinforce the concept. This activity will help students visually and physically grasp the idea of subtraction as ‘taking one away’.

Class Activity: ‘One Less’ Game with Blocks – Play a game using blocks – Each child shows ‘one less’ – If you have 3 blocks, show us 2 – Take turns removing a block – Wait for your turn, then remove 1 block – Observe the change in number – What number do you see now? | This interactive game is designed to help Kindergarten students understand the concept of ‘one less’ in a tangible way. Provide each student with a small set of blocks (up to 5). As each child takes their turn, they will remove one block from their set and count the remaining blocks aloud. This activity not only reinforces the concept of subtraction but also helps with number recognition and counting skills. For variation, some students can be asked to remove a block from a peer’s set, or to visualize the removal without physically taking a block away. Encourage the children to articulate the change in number after each turn to solidify their understanding.

Fantastic Work on ‘One Less’! – ‘One less’ means taking one away – Practice with frames up to 5 – Frames show numbers with dots; remove one to see ‘one less’ – Use fingers to subtract one – Hold up 5 fingers, put one down, now there are 4! – Let’s remember this tomorrow! | Congratulations to the class for learning the concept of ‘one less.’ It’s important to reinforce that ‘one less’ simply means taking one away from a group. Encourage the students to use frames with up to 5 dots to visualize this concept. They can also use their fingers to physically subtract one, which helps in understanding the concept kinesthetically. Remind them to practice this at home and let them know you’ll be revisiting the concept in the next class to ensure retention. This slide wraps up the lesson and prepares the students for continued practice.