If you aren't already using number talks, it is worth learning about them, and beginning to implement them in your class. Sherry Parrish's book Number Talks is a great place to start. You can also view many examples of number talks in the classroom on Youtube.
Number talks are quick and easy - ideally
To help you get started, with Early Level number talks, I've made a 'Number Talks starter pack' (suitable for Primary 1/Kindergarten). In this pack, there are a variety of resources to help teachers get started with Number talks. Click the picture above, if you think this resource could be helpful in your own class.