This book project is a collection of educational psychology essays. The essays are meant to assist primary school teachers in their teaching as they draw a lot from educational psychology.A teacher who has knowledge of educational psychology is is able to handle students with diverse learning dispositions including respect for their individual differences.The essays were generated from the ideas of very influential theorists like Piaget, Vygotsky, Bruner, Ausubel, and Maslow among others.Educational testing and measurement and evaluation has also been included as a critical aspect in teaching and learning in the primary school. The issue of motivation has also been given prominence as this is what drives learners to success.While the book deals and gives examples form the primary school, its use and the application of the ideas therin transcend educational boundaries