Showing posts with label leaf experiment. Show all posts
Showing posts with label leaf experiment. Show all posts

Wednesday, 1 August 2012

This day in history - Priestley discovers Oxygen


Joseph Priestley

Today is the First of August 2012. On this day 238 years ago in 1774 Joseph Priestley discovered oxygen .


Our Calendar

James Priestley was a English Scientist.


This is England!



He was a very curious man. He did lots of experiments. During his experiments he discovered Oxygen.

The symbol for Oxygen 


O is for Oxygen. Practise the Jolly Phonics. Pretend to turn a light switch on and off and say O, O,  O,O

Jolly Phonic workbook page. 

What Is Oxygen?

We can't see oxygen. It is invisible. We can't see it and we can't smell it. Oxygen is very important. Without it nothing could exist. We would not be here. Oxygen is in the air all around us and in the water we drink.  All plants and animals need to breathe. We breathe in air from our nose and our mouths.

I got my children to place their hands on their tummies and take deep breathes so they could feel the movement of their diaphragms as they breathe.

We can feel our tummies move when we breathe in and out.

 It makes its way into our lungs. The oxygen  then hitches a ride of our red blood cells and travels all around our body.





What Is Air?

Air is a mixture of Oxygen and other invisible gases. It is all around us but we can't see it. So if we can't see it how do we know it is there?

I used a empty pop bottle to demonstrate the existence of air. What is in the bottle?

Nothing? Right?

I squeezed the bottle onto their faces so they could feel the air blow out.


Macey squeezing the bottle so Drew can feel the air.