From Seneca Learning (Certificates upon completion, free account):
Dual Coding is one method of reducing cognitive load for pupils.
The following links provide useful reading around this matter.
Highly Effective quality of instruction is key to reducing cognitive load for pupils
Tom Sherrington - Rosenshine Masterclass
Part 2 - Rosenshine Masterclass II Sequencing Concepts and Modelling
Part 4 - Rosenshine Masterclass IV Daily Weekly Monthly Review
Part 5 - Rosenshine Masterclass V Stages of Practice and Conclusion