Science - observing and fair test

Today in science we had a choice to do a fair test or observation over time. We were split up into two groups. One group were given: a sponge, plastic bag, tin foil, kitchen roll and a tissue. In this group we had 30 ml of water to put in a tray and we had to leave each material (the variable) in the tray for 30 seconds, in order to make it a fair test we had to see which material could absorb the most water. We predicted that the sponge would absorb the most water because it the air within it would allow the water to be soaked up. Our experiment was awesome and we were correct with our predictions.

In the other group, we were provided with 2 different types of bricks. We put the in a tray, separately, with a litre of water. Our experiment was to observe over time to see which brick, if any, would absorb the most water. Each hour we measured the depth of the water in cm. Our findings showed that the red brick absorbed a ml each hour and the black brick didn't absorb any water at all. The holes in the brick allowed the water to be absorbed - this wasn't the case for the black brick as there were no holes.

Science

Yesterday afternoon in Science, we were introduced to our topic for the term - Properties of everyday materials. We thought about different experiments that we could do to test  the properties of materials: the strength - what would happen if they were dropped from x height, what material would be best to keep ice cream cold, how can insoluble materials in water be separated from water, and many other ideas.

Today we were classifying a range of objects - they ranged from feathers to rocks. Each group changed their minds on numerous occasions before deciding on their final categories. We then wote our reasoning behind our choices.