This PPT follows on from the very simple presentation: ‘Looking at Levers’, and includes some slides which refer back to it. Depending on their language level, the PPT is aimed at learners in Grade 1/Year 1 upwards. The presentation develops the basic principles of LEVERS and LOADS, introduced in the first PPT, but it then goes on to introduce the idea of EFFORT. The presentation is designed to be interactive, and can be used to deliver the lesson. For this purpose it refers to the accompanying PDF worksheet ‘Look at these Loads’, and also includes a poster-making activity. Slide/teaching notes are included with the presentation. Although the idea of levers is presented very simply in these materials, they may be appropriate for use with older learners, eg National Curriculum, Year 5, 'Earth and Space'.