Use games to teach the children math. For example, the teacher can divide the children into different numbered groups. She will then bring two groups together and ask the kids to add the number of children that are in the newly formed group. According to Scholastic, many states have standards that require all first graders to know how to add and subtract, for sums of at least 20.
Introduce the concepts of money to the children. Show children what each denomination of coins means and teach them how to add and subtract using them. This will allow the kids to learn how to add and subtract by ones, fives and 10s.
Show the children what you wish for them to accomplish instead of simply giving them verbal instructions. Children learn more easily by example. For instance, if you want a child to make a square with four pencils, show them how to perform the task first.
Take the children outdoors and ask them to draw simple objects they see in nature. For instance, a tree will become a large triangle and a window on the school is a square or rectangle. This will help the kids learn how to associate a geometrical idea with an everyday object.
Avoid teaching the children the same concept for longer than two to three days of a week. If there is too much repetition the kids will become bored with the lesson and will stop paying attention.
Encourage parents to continue teaching these same concepts at home. The Internet, flash cards and educational board games can all be used to help the child learn after the classroom day has ended.