Scientist Skills

Crime 
Scene 
Investigators 

are Scientist...

Important Skills

*  Act Safely and Sensibly

*  Predict what could happen

*  Focused Thinkers
*  Observation Skills - collect evidence
*  Explaining Skills
*  Ask Questions like what if and why?
*  Make Theories about The BIG IDEA
*  Make connections and draw conclusions
*  Identify variables
*  Run fair tests

CSI Training

Your mission...

Form a group of CSI detectives - people you can work with.
Include everyone in your class.
No more than 4 in a group in total.

The time it takes you to do this will count against your final detective grading.


TOP SECRET TRAINING
Build your investigation skills and your ability to identify different substances by testing and classifying a variety of mystery materials.

IMPORTANT: Do not try and guess what these materials are.  Use your skills to classify them.

Strange Properties

Watch this film and list all the properties that you observe about this substance.

Properties include:

• what it looks like
• how it acts or behaves
• how it feels
• what it can do
• what did you see happen?

Classification and Testing

• Organise your work station
• Name your recording sheet
• Take it in turns to collect equipment and materials
• Stay sitting unless you are collecting equipment or materials

• Take a sample of each substance
• Use your observation skills to identify the properties of each material
• Fill out your classification grid
• Use your findings to complete your first CSI MIssion

Testing Different Substances

Describe

• Look
• Colour
• Texture
• Smell

Touch and Feel

• Is it hard?
• Is it smooth?
• Is it powdery?
• Is it grainy?
• Is it lumpy?

Add to Water

• Does it float?
• Does it sink?
• Does it mix?
• Does it change?
• Does it vanish?

Add Water to Substance

• Does it mix?
• Does it react?
• Does it change?

Heat it

• Does it burn?
• Does it change colour?
• Does it do anything?

Add Vinegar

• Does it float?
• Does it sink?
• Does it react?
• Does it change in any way?

Mission Impossible

Mission I

Visit the crime scene and collect any evidence that could be useful.

Take evidence samples from the suspects.

Use your skills as a CSI investigator to match the evidence form the crime scene to the suspects and...

decide 

who 

is 

guilty!

Crime Scene

Mr. Krabs suspects one of his employees of stealing ingredients from the kitchen of the Krusty Krab

CSI investigators have recovered a sample of a mystery powder found at the crime scene.

1. Identify the mystery substance - match it to your test samples.

Each of our suspects has been found with a large amount of a strange substance.

2. Identify the substance that goes with each suspect.

3. Match the missing substance with the prime suspect!

Who is our thief?

Who is guilty?

What is their motive?

Patrick

Has been stealing icing sugar to decorate cakes in the evening!

Spongebob

Spongebob has been stealing cornflour because he loves to make slime!

Squidward

Squidward has been stealing flour to perfect his own patty recipe!

Magic Crystals

There is something dissolved in the water.

Watch this time-lapse and maybe try this at home yourself

Where did these crystals come from?

What did you see happen?

Slime!

How to make...

Foaming!

I don't believe it!

How did that happen?

Why did that happen?

What did you see?

Watch this video...