This week we started looking at human nutrition. We first looked at digestion. The children discussed what they already knew about digestion and how the process works. The children identified each stage of digestion. They then went on to practically examine the stages of digestion. They first made a sandwich. Next the cut up the sandwich with a knife to simulate the incisors (teeth) breaking the food into smaller parts. They then mashed the sandwich with a potato masher to mimic the molars (teeth) grinding the food. Then it got messy. Saliva (coloured water) was added to show how it aids in the first steps of digestion. This then traveled into a bag and mixed with stomach acid (lemon juice) to show how food changes in the stomach. The children then transferred the food from the stomach to the intestines (tights). The liquid was then squeezed out of the mixture to simulate its travel through the intestines. At the very final stage the mixture was passed through a hole showing the end of the digestion process.
The children then looked at the first stage of the digestion process. The mouth! The children bite into a piece of apple to see what each tooth did when chewing. The children then used mirrors to observe their own teeth. They then created models of their mouths. The children then labelled the different types of teeth that can be found in their mouths, incisors, canines, premolars and molars.
Our first step this week was to recognize what appliances around the home use electricity. We then sorted these into groups that used battery or mains power and those that may use both. The children worked together to create a Venn diagram of their findings.
We then looked at the parts of a circuit. We talked about each part and then had a go at creating a circuit that could light a bulb. We had great fun trying to find different ways of making the bulb glow.