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.  30cm ruler
2. 1 metre ruler

Steps:

1. Get 2 rulers. 
2.  Measure you and your partners feet.
3.  Then get a  1 metre ruler.
4.  Now measure you and your partners height.
5.  Write down you foot Leigh and height. 

Findings:

Name	Foot  (cm)	Height (cm)
Makaea	21	153
Kyla	23	162
May	23	161

Forgeries

Graphologists are forensic experts who look at handwriting.



Many things can be forged: art works, money, writing, etc

Forgery link

Aim: To Analyse a signature using forensic science.

Material:

A pen / pencil
Tracing Paper
Writing paper
A ruler

Steps:

A. Top Of Letter Analysis

1. Sign your name on a sheet of writing paper and get someone else to try to copy it.
2. Place the tracing paper over both signatures and make a dot at the top point of each letter – for both signatures.
3. Join up the dots for both signatures to get two zigzag lines across the signatures. Are the lines the same?

B. Bottom of Letter Analysis

1. Put some fresh tracing paper over both signatures.
2. Put a dot at the bottom of each letter.
3. Join up the dots to make zig zag lines. Are the lines the same?

C. Slant Analysis

1. Put a fresh piece of tracing paper over both signatures.
2. Mark a vertical line down through the middle of each letter (using a ruler), slanting it in the same direction as
the letter.
3. Compare the set of lines for both signatures. 
What do they tell you.

Findings:

	You	Friend
Top Letter Analysis Are the lines the same?		No because the top is to close together.
Bottom Letter Analysis Are the lines the same?		No because the bottom is shorter than the original.
Slant Analysis What are the slants telling you?		The slants are telling me that the signatures are not the same.

Conclusion:
My conclusion is that we can not perfectly forge each others signatures 

Skittles

Skittles

Aim: To separate colours by using the process of chromatography.

Materials;

1. Petrie dish
2. Water
3. Skittles
4. Petrie tray 
5. Jug 


Process:

Step 1: Grab your petrie dish and place it on a flat surface.

Step 2: Get your skittles and place them in your petrie dish.In 5 equal parts.

Step 3:Get your water and pour it over your skittles so its just covering them.

Step 4:Wait until the skittles are dissolved.

Findings: Write about what happened.
The colouring in the skittles faded to the middle of the plate. 

Reflection: What have I learnt from this experiment?
The colouring in skittles slowly faded and don't fade straight away.
What did the colours do?
the colours faded to the middle on the plate.

Did the colours mix together?
The colours would only mix if you bumped them.

Why or why not?
They wouldn't mix because the water was still. They would mix if the water was bumped.

Chromatography - Extension

Extension:

What is another experiment you could do using chromatography and how would you do it.

Title; 
Marker Chromatography
Aim: 
To separate colours to make a beautiful design.  
Materials:

• chromatography paper or coffee filters
• washable markers
• wooden craft stick
• binder clip
• jar with an inch or two of water in the bottom
• paper towel
• pipe cleaners

Process:

Draw a design on the chromatography paper.

Fold the paper in half and half again until it is narrow enough to fit inside your jar.

Place a craft stick at the top of the wedge of paper. Attach a binder clip to the paper and the craft stick.

Place the paper in the jar of water (suspended by the craft stick) so that only just the tip of the end is touching the water.

Watch as the paper draws water up from the jar. You will start to see the colours separate and spread!

When the water line reaches the top of the paper, pull it out, unfold it, and let it dry on a paper towel.

Once the paper is dry you can display it as ­is or fold it into a butterfly, a gift bag, or a beautiful flower!

Mars

Mars

How to get to Mars

Aim: To design and build a Mars Rover using  Lego Technics.

Learning Outcomes:

• Students will learn about the different parts of the Rover 'Curiosity' and what they are used for.
• Students will design and draw a Mars rover.
• Students will write a about the 5 main instruments and how they are used.
• Students will build a Rover suitable for the Mars terrain
• Students will share their model with the group.

Mars Rover 2020

Name:	Purpose:
Wheels	The rover has six wheels, each with its own individual motor. The two front and two rear wheels also have individual steering motors. This steering capability allows the vehicle to turn in place, a full 360 degrees. The four-wheel steering also allows the rover to swerve and curve, making arcing turns.
Solar Panel	To provide energy to the rover while up in on mars. Because it provides energy to the rover it doesn't need gas.
Laser	To see organic compound that could be related to past life on mars.
Camera	To examine the rocks and soils on mars.
Shovel, rock pick,drill	They are used to collect samples to bring back to earth. Also to examine how hard the surface is, and the different types of soil on mars.

1. Draw a design of your mars rover that includes the parts above. Clearly label each part.

The drawing must be neat, clearly labelled, and coloured.
Upload a picture of your drawing onto your blog.

2. Make a Mars Rover that has the following:

1. 6 wheels
2. 1 camera
3. 1 shovel, rock pick, at the front
4. 1 solar panel
5. 1 laser that points at the ground

Upload a photo of your mars rover onto your blog.

Forensics

Forensics

http://sciencing.com/list-forensics-techniques-6392795.html

1. What is the definition of forensic science?

Relating to or denoting the application of scientific methods and techniques to the investigation of

crime.

2. Name 5 different kinds of activities used in forensic sciences and find a picture for each.

-Fingerprints

-D.N.A

-Footprints

-Ballistics

-White powder test

3. Name 5 jobs that would use forensics to investigate crime 

-Investigator

-Chemist

-Science technician

-Photographer

-Documents examiner

Finger prints

Aim: To look at the different types of fingerprints.

Material: 

1.   Ink pad
2.   Wipe
3.   Balloon  

Steps

1.   Get a ink pad.
2.   Get a balloon.
3.   Put your finger print on the ink pad.
4.   Put it on the balloon. 
5.   Blow up the balloon.
6.   Wipe the ink off your hand.

Record the types of fingerprints from those in your group.

Name	Fingerprint 1 ( Thumb)	Fingerprint 2 (finger)
Makaea	loop	loop
Tukotahi	loop	loop
Jackson	whorl	whorl

Summary of findings:

Tukotahi and I both had loops. While Jackson had whorls.

Hidden fingerprints:

Aim: To learn how to lift hidden fingerprints from an object.

1. Lifting and Gathering fingerprints.

Equipment:

1.   fine Powder
2.   Brush
3.   Tape
4.   Magnifying glass
5.   Card

Method; 

1. Put finger prints on a surface.
2. Then with fine powder and a brush go over the surface.
3. After uncovering the finger prints with fine powder then put tape on one.  
4. Then pull the tape off the surface with the finger prints.