Aims and objectives
The pupil will understand the term "one less than". They
will be able to take one away from a given number between
2 and 10.
Previous knowledge
Pupils can count up to ten and back again in ones. They can add
one more to a given number and they are aware of the associated
vocabulary.
In the classroom
The pupil will see a set of randomly placed number cards from to
1 to 10. One number is highlighted. The pupil has to
click on the number that is 1 less. Pupils clicking on the
correct number are rewarded with a smiley face. Pupils
clicking on an incorrect answer are asked to try again. If
pupils are having difficulty, a message will tell them to ask the
teacher for help. When the pupil finishes the activity, a
score appears. The higher the score, the more praise they
receive.
This activity, if used with an interactive whiteboard, allows
the teacher to pick children to select their answers and talk about
their decision to the rest of the class. Other children in the
class can provide help and support to their peers.
| Support materials description: |
Resource type: |
| The first worksheet offers teachers the
opportunity to develop pupils' mental agility. As part
of a whole-class activity, pupils can cut out the number
cards. When the teacher asks, "What is one less
than 3?", pupils respond by holding the correct card
in the air. More able pupils can make up questions for
the rest of the class. |
One_less_than.pdf |
| The second worksheet asks pupils to complete number sequences. Each
sequence counts back in ones and the sequences increase in
difficulty. More able pupils can make up their own sequence. |
One_less_than_complete.pdf |
| The final worksheet asks the child to complete number sentences
by taking away 1. In this way, the original activity is reinforced and extended. |
One_less_than_complete_2.pdf |
Curriculum references
Foundation Stage – Early Learning Goals:
- Say and use the number names in order in familiar contexts
- Count reliably up to 10 everyday objects
- Recognise numerals 1 to 9
- Use language such as more or less… to compare two numbers…
- In practical activities and discussion, begin to use the vocabulary
involved in adding or subtracting
- Find one more or one less than a number from 1 to 10
Key Stage 1 - Numeracy Strategy:
Count on and back in ones from
any small number…
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