Writing a report

Writing a Report
www.edgalaxy.com

What's the purpose?
Newspaper reports
Information reports (living and non living)
Science
What do they have in common?

Today’s Purpose
Science
You will have 15 mins at each station to conduct the experiment and report your findings using the template provided.
Work with the people in your reading group.
We will then clean up and each student can select their favourite experiment to write up as a report.

How do I write a report?
Title: Name of Science Experiment
Introduction/Purpose
Today we are going to test ........
Materials
List everything needed to complete your experiment
Method
Describe the steps you completed during your investigation
Results and diagrams
What were the findings of your experiment.
Conclusion: Sum up what happened

Making Goo
What you need:
1 cup cornflour
bowl
ABOUT 1/2 cup water
spoon
pie plate
food colouring
Directions:
Empty 1 cup of cornstarch into a large bowl.
Stir while you add water SLOWLY -- don't add all of it if you don't need to.
You need the consistency of thick pancake batter.
It's better to add too little water than too much.
Take your time!
Add a few drops of food colouring.
Stick your hands in the mixture.
Record what it feels like.
What happens when you try to roll some into a ball and then leave it alone?
Pour the water into a pie plate. (water is a liquid)
smack it with your hand
record what happens
Empty the paper plate. Pour the cornflour mixture into a paper plate.
smack it with your hand
record what happens
does it act differently than the water?

What happened?
What Happened when we made Goo
When we talk about "states" of matter, we usually talk about the three types: solid (like a rock), liquid (like water) and gas (like the air we breath).
A mixture of cornflour and water make what is known as a suspension. When you squeeze a Cornflour Suspension it really feels like a solid because its molecules line up. But it looks like a liquid and acts like a liquid when no one is pressing on it because the molecules relax. This is another state of matter, called a suspension (It can act like a liquid, or, when pressed like a solid.).

Magic Potion
What you need:
bowl
2 Tbsp vinegar
1 Tbsp baking soda
Directions:
Put 2 Tbsp vinegar in the bowl
Add 1 Tbsp baking soda (all at once)
Record what happens using your report template
NOW TRY THIS:
Pour 4 Tbsp vinegar in a container with an opening small enough to fit a balloon around (small vinegar bottle or juice bottles work well).
Pour 2 Tbsp baking soda in a balloon that isn't blown up (make a siphon out of cone of paper)
Without tipping the baking soda in, put the balloon over the top of the container. Use your hand or a rubber band to hold the seal.
Jiggle the balloon so the baking soda is dumped in.
The balloon will blow itself up! (this is the carbon dioxide gas)

What happened?
What Happened when we made Magic Potion
The bubbles that form are carbon dioxide gas. A chemical reaction occurs between the vinegar (an acid) and the baking soda (a base).
For all of you bakers out there, this is also what makes cakes and quick breads (the no yeast kind) get nice and fluffy.
The balloon blew up by itself!
(carbon dioxide gas produced during the experiment.).

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Writing a report

by Kevin Cummins on Aug 30, 2011

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