The feet can measure the height

Hurumanu - The feet can measure the height.

THE FEET CAN MEASURE THE HEIGHT

The bones of the feet can tell a lot about a person. What do feet reveal about a person's height? Forensic anthropologists team up with law enforcers to help solve crimes.

Bones of the feet can reveal an interesting fact about an individual. Let's combine math with forensics to see how.

Aim:  To use forensic science techniques to measure the height of a criminal.

Material:

1.  measuring tape
2. yourself

Steps:

1.  Get your measuring tape.
2.  Get your self and some one else.
3.  Then your buddy to measure you.
4.  
5.  

Findings:

Name	Foot  (cm)	Height (cm)
Sam	25 centre metres	151 centre metres
Odin	24 centre metres	150 centre metres
Elias	25 centre metres	152 centre metres

15 is the number used by investigators to determine a persons height based on their feet. This is because 15% of a persons height is the length of their foot.

Find out what percentage of your height is your feet. To do this you need to:
Divide the length of each person's foot by his/her height then multiply it by 100. 

15 is the number used by investigators to determine a persons height based on their feet. This is because 15% of a persons height is the length of their foot.

Finger prints

Hurumanu - Fingerprints

Forensic Science

Definition:

the application of scientific methods and techniques to matters under investigation by a court of law.

    

Finger prints

Fingerprint characteristics

Aim: To look at the different types of fingerprints.

Steps

1.   Get your ink pad.
2.   Place your finger in.
3.   Put your finger carefully on the balloon.
4.    Blow your balloon up.
5.   Have a look at your finger print.

Ink prints

Thumb print	Index finger print
Loop	Loop

Record the types of fingerprints from those in your group.

Name	Fingerprint 1 (Thumb)	Fingerprint 2 (index finger)
Sam	Loop	Loop
Ethan	Loop	Loop
Elias	Loop	Loop

Dirty water expermient

Hurumanu - Dirty Water experiment

Aim: To make a filtration plant using household materials.

Water Filtration Plant

What is filtration?

Filtration is separating solids from liquids by adding a medium through which only the liquid can pass. 

Examples are:

1.  Pool
2.  Oil 
3. Water
4. 
   

Materials

1.One bottle cut in half

2. scissors

3. Filtering paper

4.Pebbles

5. Dirty water

6.Sand

7.

8.

Process - ( use verbs or doing words in each step )

Step 1

Cut the bottle in half

Step 2

Put the top half upside down in the other half

STEP 3

Add layers of  sand

STEP 4

Get 1 cup of dirty water 

STEP 5

Pour the dirty water into the funnel

Conclusion:

My groups first attempt with filtering the water didn't go so well because we mightn't of put the filtering paper in the bottle properly But the second attempt our water that we experimented with came out nearly perfect see through. 

What is that white powder?

Hurumanu - What is that white powder?

Today you will be a Forensic Chemist. 

A bag of white powder has been confiscated by the airport customs.  You need to find out what white powder it is?

Aim: To learn about the makeup of different white powders.



There are  a number of different white powders in our everyday life. Some of these are harmful and others are not. Test the four white powders listed to see which one has been found at the airport.

You will be given a small amount of 4 white powders on your cardboard. On the black cardboard using a magnifying glass look at the powders.

Look at them under your magnifying glass and record what you see. 

These are the four powders we will be using. Upload a photo of each powder. 

1.  Cornflour
2.  Baking Soda
3.  Salt
4.  Sugar 

Materials

1.  paper 
2.  Corn flour
3.  Salt 
4.  Sugar

Findings:

Absorbed, spread, frothed, fizzed, melted, blob,

	Sugar	Salt	Baking Soda	Cornflour
Appearance (White)		White	White	Large
Grains (small, medium large)	Small	Medium	Medium	Smooth
Smell (Strong, none)	none	none	none	none
Water	Melted	changed colour	?	Bounced off
Vinegar	Melted	Changed colour/ melted	Throfed	Bounced off

Write a conclusion about your findings. ( 4 plus sentences)
Use the Hexagon activity to give you some more ideas.

The sugar......
The salt.....
The Baking Soda......
The cornflour.....

Flight

FLIGHT

Aim: To learn about flight and aerodynamics. 

Definition:

the action or process of flying through the air.


4 forces of flight:

1.   Gravity
2.    Thrust
3.   Drag
4.   Lift

Paper Plane:

Material:

1. paper

2. ruler

• paper clip

Some steps:

1. get your paper
2. fold it in half 
3.  get 2 corners and fold them into the middle

4. fold the corners into the middle
Findings:

Plane Type	Distance	Behaviour
Normal	2.9m	curved
Ailerons	3.5m	straight line
Paper clip	3.2	swooped

Conclusion:

The plane with ailerons went the furthest because it had more drag but normal weight so it was more controlled than the others aeroplanes