Firstly, allow them to just simply solve the math fact by their own method -- then give them the means to solve the math fact quickly.

For example, 8 + 6 can be solved by 'adding on six', using their fingers. Once the student is ready to accept that 8 + 6 can be regrouped to become 7 + 7, they will gain speed.

Always use what the student already knows to solve the unknown, then build on their existing ability.

The math fact worksheets on site are carefully constructed to help the student do this.

See our Teaching Resources for Math Basic Facts Worksheets for worksheets, lesson plans, etc.