| Activity Outcome | Giving reasonable responses when approximating numbers in sets (to 25). Counting (to 25). |
| MTS Set | MTS1
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| NATIONAL Curriculum | The Number System |
| Topics | Understand Whole Numbers
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| Keywords | Number Sense, Count |
| Grouping | Teacher with a group of about 6 |
| Resources | Not applicable |
| Lesson Notes | - Work with children in a group of about 6. Provide each child with a copy of the activity sheet.
- Initiate the 'guessing' aspect of the activity by holding up 4 fingers and ask: How many fingers can you see? - and then quickly close your fingers.
- Repeat for other sets of fingers.
- Ask: About how many children are in the class today? Give children several seconds to look around the class before asking for responses.
- Count the children in the class so children can compare their 'guess' with the number.
- Direct children to the activity sheet and ask: How many smiley faces are in Box 1? Give children enough time to make a reasoned response but not enough time to count every face.
- Note: it is appropriate to allow the children sufficient time to count some of the faces and then make a guess.
- After each child has provided their guess, ask: How can we check our guess? Children count to find total - you may also ask them to place a tick on each face they count.
- Repeat for the faces in the other boxes. Children should begin to reason (and explain) that if Box 2 has 15 faces then the number for Box 3 must be greater, Box 6 is about the same as Box 5...
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| Reflections | Ask: Can you think of a question that starts with 'Guess how many...?' (Guess how many desks are in the room? Guess how many shoes are in the room?...)
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| Internet Links | |
| Answers | Box 1. 15 Box 2. 15 Box 3. 20 Box 4. 20 Box 5. 24 Box 6. 25 |
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