4th class enjoyed investigating slopes and friction in Science

 

Strand: Energy and forces

Strand Unit: Forces, materials, properties and characteristics of materials

Topic: Building bridges

Objectives –

The children will be enabled to –

  • Investigate how forces act on objects
  • Begin to explore how different materials may be used in construction structures
  • Explore how to make a paper bridge stronger
  • Test various paper structures

We wanted to investigate which type of bridge would be the strongest. We wanted to have a fair test so to make sure it was fair we used the same size weight (2c coin)  for each test and kept the distance of the ‘bridge’ the same. We tested five bridges – flat bridge, doubled up flat bridge, corrugated bridge, arched bridge and walled bridge. We found that the walled bridge was the strongest bridge – it held the most coins before collapsing. The flat bridge was the weakest it held the least amount of coins before collapsing.

INVESTIGATING RAMPS

Strand: Energy and forces

Strand Unit: Forces

Topic: Ramps

Objectives –

The children will be enabled to –

  • Observe and investigate the movements of objects such as toys on various materials and surfaces.
  • Identify objects that roll down a ramp
  • Identify objects that slide down a ramp.

We wanted to investigate the movement of various small objects on the same surface. We wanted to see if the objects would slide/roll or not move down the ramp. We decided to test rubber ping pong balls, plastic unifix cubes, glass marbles and metal paper clips. To keep the test fair we used the same surface material for each test – our Busy at Maths book. We also kept the height of the ramp the same for each test. Before we started our experiment we made predictions for each object. We guessed whether they would slide/roll/not move down the ramp. After our prediction we tested each object fairly. We also measured how far the objects rolled off the ramp to see which rolled the farthest.  

3rd class investigated the best materials to create a parachute in March 2019. In the first part of this activity, they learned about gravity. They investigated how paper falls using a scrunched up piece of paper and a flat piece of paper dropped from the same height.

They learned that the reason the flat sheet is slower to fall is because it has more air resistance. This was the basis for their parachute. They chose three materials to test - aluminium foil, kitchen paper and baking paper. In order to keep the test fair, they use the same size material for each parachute and the LEGO men that the parachutes were tied onto were carefully weighed to ensure they were all the same! Before they carried out the experiment, they predicted which material they thought would make the best parachute...her's how it went!

The Senior Infants made simple circuits using light bulbs, wires and batteries.