Here are some links to recommended websites and resources for this terms topic that can be accessed at home.
What Is A Force
What Is A Force http://www.novel-learning.com/ An interesting video meant for primary / elementary school students. A force is a push or a pull.
Introduction to forces | Primary Science - Terrific Scientific Forces - Live Lesson
Suitable for teaching 9-11s.
Balanced and unbalanced forces | Primary Science - Terrific Scientific Forces - Live Lesson
Suitable for teaching 9-11s. Ben Shires and Greg Foot investigate balanced and unbalanced forces using a ball, and hairdryers!