Pupils take some everyday objects and sort them in 3 different tables depending on the force applied on them.

Then the PUSH force elements are placed on the blue table, whereas the PULL force elements go on the yellow table. Finally those objects that can be BOTH PUSH and PULL are displayed on the green table.

The underneath idea is that mixing blue and yellow colours we obtain green colour, which has some of the properties related to its two original primary colours. In consequence, visual correspondence is established here to reinforce the studied concepts. See the 3 tables and the choice made by the children.

One example of BOTH PUSH and PULL is a sticker.  You pull it first and  when you put it on a surface, you push it. See pupil showing a circle sticker in order to demonstrate both forces.