###
**
INTRODUCTION:
**

The lesson plan is presented in three sections: Gravity on Earth, Big Telescopes and Gravity in Space. Depending on the length of lessons in your school, these could be delivered as a single lesson or split into a series of two or three separate lessons.

###
**
PREPARATION:
**

Download all the relevant documents of the lesson plan. Start with the ‘Gravity PowerPoint Presentation’ and carry out the following three parts (or a specific part) after each section of the presentation.

##
**
PART 1: GRAVITY ON EARTH
**

Within the first section of this lesson/series of lessons, your students will first learn about the classical force of gravity, put forward by Newton. They will learn the difference between ‘mass’ and ‘weight’, the equation that links the two and investigate the strength of gravity on Earth.

This investigation can be performed in two ways. The first is to directly measure the acceleration due to gravity, by measuring the acceleration of an object in free fall. The other is to measure the strength of gravity on Earth by taking measurements of masses hanging from Newton meters.