5 Facts!!!!

Hey readers  today we are doing 5 Facts YA!! here is a DLO for you i hope that you learn from this.

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

Definition: Chromatography is a method of separating out materials from a mixture.

Eg. blood, ink, drugs,

Scenario

A crime has been committed. The police have a signed cheque and a letter from the same crime scene but it seems like the handwriting is different. They have 3 suspects but not enough evidence. They need to know if the letter and the cheque were written by the same person.

How do they tell if the pens used for both of these pieces of evidence are the same?

 

Rainbow paper

Materials;

1. water

2. felt pens

3. a cup

4. chromatography paper

Process:

Step 1: get a ten Centimetre pecs of paper.

Step 2:mark a Centimetre with your felt pen put two dots.

Step 3:put water in the cup so it is just touching the paper.

Step 4:and wait for to do its thing

Conclusion: What have I learnt from this experiments.
I learnt that a few drops goes a long way

Hurumanu - The Case of the Barefoot Burglar

Hurumanu - The Case of the Barefoot Burglar

The case of the Barefoot Burglar

In groups of 3 you are going to need to use your forensic knowledge to solve a crime. You must use the web page: Barefoot Burglar Evidence

1. Determine which of the four suspects is the "Barefooted Burglar"? 
2. What do you think was the motive for this crime? 
3. Write the results of your findings and convince a jury of your peers

The Crime

At approximately 7:15 a.m., Friday morning, Mrs. King, the science teacher, thought something was fishy as she walked down the hall and noticed that her door was open. She walked into her classroom and immediately discovered that the small aquarium had been broken and her prized gold fish were gasping in the sink. Beside the broken aquarium were the shattered remains of the pink piggy bank that had been on the shelf above the aquarium. A can of blue paint was spilled on the floor. Footprints of a barefooted burglar led to an open window. Bits of a white powdery substance were found next to the broken, empty, piggy bank. The only other item found was a half-eaten large chunk of chocolate candy.

When the police arrived they immediately began to gather forensic evidence.

Dan the Man Height : 176 cm Alias: The General Dan was wearing a woolen general's uniform with small holes when apprehended in the woods. He claimed to be gnawing on wood for moisture and insects to practice his survival training. His teeth look like a beavers from gnawing. His wife complains that she never has any baking soda due to Dan's compulsion about storing clothes in mothballs. He thinks the baking soda takes away the mothball smell, so he stuffs his pockets with the substance. Also, his wife reports that her giant chocolate kisses continually disappear from the candy cupboard. He blames their dog Patton, an English bull terrier, who patrols the neighborhood. His neighbors report that Dan loves the military. He was very regimented about playing taps on his bugle every day at sunset until an irate neighbor broke his bugle. Dan has been trying to save money for a new one. Peg the Leg Height: 152 cm Alias: Lucky Lady

Peg is a librarian known for hanging horseshoes and four leaf clovers in her library. Employees say she is so superstitious she insisted on carpeting in the library instead of laying tiles so she would not step on the cracks. She wraps construction zone tape around open ladders so no one can walk under them. Cola bottles litter her office, which she drinks with chocolate chunks. Her teeth are chipped from knocking the bottles against them. She is always throwing salt over her shoulder for good luck and keeps a salt shaker in her purse. Her alibi is that she was busy closing open umbrellas the morning of the crime.

Jake the Jock

                                                                         Height 201 cm

                                                     Alias: Armchair Quarterback

                                                                                         

Jake the Jock is known for quoting statistics on every sport from boomerang throwing to sled dogging. His neighbors report that he is the neighborhood pitcher for baseball games. Last year a baseball hit him in the mouth and knocked out his front tooth. This has cramped his eating style of chocolate chunks, candied apples, and corn on the cob. His wife claims that on the morning of the crime Jake was rubbing his hands with cornstarch to keep them dry in preparation for an important baseball game.

• 
  

Lou Lou Height: 160 cm Alias: Sweet Tooth

Lou Lou is so addicted to sugar that she never leaves home without it. She loves to bake sweet things and has an entire pantry full of sugar bins. She claims to have been baking her famous chocolate chunk cookies the morning of the crime (although not a morsel of cookie or chocolate chunk was left when the police arrived.) Lou Lou rarely wears shoes, which often causes her to slip and break things, especially her collection of ceramic pigs. Evidence:

• Fingerprints: Sticky, 'swirl' fingerprints were lifted from the aquarium and piggy bank. 
• Footprints: The painted footprints were measured and were for 26 cm feet. 
• Teeth: The chunk of chocolate candy was collected for examination. It appeared there were teeth imprints.
• White Powder: The white powdery substance by the piggy bank was carefully placed in a plastic bag and taken to the forensic chemist for identification . It had very small grains and when mixed with Iodine it reacted making the colour brown. It did not have a smell.

Name: Dave

                        

Fingerprints: No.

Mouth prints: Has a chipped tooth.
Shoe size: 16
White powder: None found.

Name	Evidence
Dan	Fingerprints:whorl Mouthprints: beaver theeth Shoe size:26.6cm White powder: baking soda
Peg	Fingerprints:loop Mouthprints: chipped tooth Shoe size: White powder:salt
Jake	Fingerprints:whorl Mouthprints: missing thooth Shoe size: White powder: cornstarch
Lou	Fingerprints:arch Mouthprints: no theeth Shoe size: White powder:sugar

Findings: ( what did you find. Summarise what you have written in the table above)I read the behaviours of each of the characters in the story, studied their fingerprints and found out what sort of white powder they often used. I also learnt what sort of teeth they had (beaver, chipped, missing and maybe no teeth at all   (in Lou Lou's case). lou lou have's sugar jake have's cornstarch dan have's baking soda and peg have's salt.

Verdict: ( who is the burglar and why)

I think the burglar is Dan because baking soda froths up in vinegar. The shoe size matches. He's got big beaver teeth and the tooth prints were in the chocolate bar. Hi fingerprints matched "cos the were a whorl.

Hurumanu - 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. tow people 
2. one meter ruler

Steps:

1.  
2.  
3.  
4.  
5.  

Findings:

Name	Foot  (cm)	Height (cm)
Makenzie	22 cm	145 cm
Sapphire	26 cm	179   cm
Lily	28 cm	164  cm

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.

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.  
2. 
   
3. 
   

Steps:

1.  
2.  
3.  
4.  
5.  

Findings:

Name	Foot  (cm)	Height (cm)

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.

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.  
2. 
   
3. 
   

Steps:

1.  
2.  
3.  
4.  
5.  

Findings:

Name	Foot  (cm)	Height (cm)

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.