finishing up forensics

The case of the Barefoot Burglar

http://www.cyberbee.com/whodunnit/crimescene.html

In groups of 4 or five you are going to need to use your forensic knowledge to solve a crime.
Using the clues found at the crime scene, determine which of the four suspects is the "barefooted burglar"? 
What do you think was the motive for this crime? 
Write the results of your findings and convince a jury of your peers.

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.

• Sticky fingerprints were lifted from the aquarium and piggy bank. The painted footprints were measured. The chunk of chocolate candy was collected for examination. It appeared there were teeth imprints.
• The white powdery substance by the piggy bank was carefully placed in a plastic bag and taken to the forensic chemist for identification .

Findings:

Verdict: Dan the man

http://www.cyberbee.com/whodunnit/crimescene.html

Forensics

A forensic scientist may discover powder at a crime scene. In order to determine if it is illegal or not the crime lab will identify the substance using chemistry. Take on the role of a forensic chemist to identify unknown substances.

Become a Forensic Chemist by following these procedures and filling in the Powder Analysis Chart with your results. 

Complete the appearance, texture, and smell activities before opening the vinegar and iodine bottles.

Record your findings in the Powder Analysis Chart below.

Aim: To determine how different powders feel, look and react to other substances.

Hypothesis: 

Equipment: Baking Soda ,Cornflour, Sugar, Salt, Iodine, Magnifying, glass
Eye drop
Black card
Tea spoon / stick


Method: 

1. Place one-fourth teaspoon (1 ml) of the four white powders on a sheet of black construction paper. Label the powders with your pen.
2. Study the powders with the magnifying glass. Examine what each powder looks like. How would you describe the powder's shape. Does it have large or small grains? Your observations should be written in the appearance column of the chart.
3. Examine the powders further by rubbing each powder between your fingers. Describe how each powder feels in the Texture column of the chart.
4. Determine if there is a smell to any of the powders. Record your findings in the Smell column of the chart.
5. Take the eyedropper and place a drop of water on each individual powder. Examine what happens? Do the powders dissolve? Is there a reaction? Write your observations in the Reaction to Water column.
6. Place one-half teaspoon (2ml) of each powder in a separate jar. Add 2 drops of iodine to each jar using the eyedropper. Record what happens in the Reaction to Iodine column. Iodine should be handled with care.

Findings:  

Powder Analysis Chart

                                                                                                  
Substance          Appearance   Texture    Smell       Water                       Iodine
 
Cornflour                  smallest            soft     no smell    makes invisible barrier      bounces off it/ joins up.                                     

Sugar                      biggest              hard    no smell    absorbs                        absorbed it

Salt                        median       in between   no smell    absorbs                      changes colour

Baking soda             small                soft     no smell     barrier                        makes a barrier.

Comparing test results of substances that are known help Forensic Scientists identify unknown substances.

Summary: 

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? Forensics anthropologists team up with the law enforcers to help solve crimes.
Bones of the feet can reveal an interesting fact about individual. Let's combine math with forensics to see how.

Names:              Foot size.                  Hight.

Alex:                        18 cm                 1:3   m              
Aiden:                      23 cm                 1:50 m                15.3    
Shanix:                     27 cm                 1:59 m                  
isabella:                    20 cm                 1:42 m              
Kalim:                      23 cm                 1:52 m      

1. Have the students in your group remove their shoes and measure their height.
2. Measure the length of the adult's left foot from the wall to the tip of the big toe.
3. Examine the numbers. Do you see a pattern?
4. Divide the length of each person's left foot by his/her height. Multiply the quotient by 100. What do you get? You may also want to use the calculator on a computer for this activity

Use the scientific method to write up this experiment.

1. Aim: 
2. Hypothesis
3. Method
4. Equipment
5. Results
6. Summary
7. Conclusion

Drawing graphs in sciences

Rules

1. Always use a sharp pencil
2.Use a ruler if drawing a line graph.
3. Choose scales so that the graph takes up at least 80% of the paper
4. Label both axis with a description of what you are measuring.
5. Give your graph a title.
6. Never rule back to zero.

1. Outline 2 features of a good graph? straight lines and bold writing.

2. Suggest why graphs should be drawn in pencil? so the you can erase if you have to.

3. What needs to be given a title on a graph? what you are doing/topic axis

Using the graph paper provided graph the class results of your phone / Chromebook model.

Aim: To record, tabulate and graph data.

Hypothesis: I think that the most popular model is an Iphone 5s / Acer Chromebook

Method: 

1. Note the make of your phone / chromebook

2. Record your results on the whiteboard by ticking the appropriate box.

3. Record the class results in the table below.

4. Use the graph paper provided

• Draw a chart
• Graph the results 

Conclusion: 

Forgery

Today we are learning about forgery, this is what it is. forgery is the way of copying another persons writing or signature. criminals use it for signing cheques falsely.

Aim: to figure out what pen is used to write a forgery letter.
Hypothesis: we will know what pen was used.
Method/Equipment: beaker, filter paper, pen, cello-tape, water.

1. put a dot on the filter paper about 2cm up from the bottom.

2. put 50ml of water in the bottom of the beaker.
3.put the paper in the water and leave it there for 5min.
4.attach a piece of the letter to the paper with sellotape.
5.place the paper in 50ml of water.
6.compare the 2 ink marks.

E.O.T.C Week

At the end of this term we did some activity's for E.O.T.C week. E.O.T.C means education outside the classroom. This is a fun week for us because we don't have to do school work but we get to do some activity's like Sailing, Ice skating and more for 4-5 days.

This year we did Surfing and body boarding, Mega air and top team, Adrenalin forest, and Sailing but it was cancelled.

1st we did Surfing, We had some amazing teachers that taught us how to surf at Sumner. It was a calm day and we had some big waves too. It was an amazing day and we had fish and chips for lunch. Here are some photos of us surfing and body boarding.

Next day we did Adrenalin Forrest. If you don't know what Adrenalin Forrest is it is a high rope coarse were you have a harness and you have to go across ropes and zip lines. Here are some photos of what we did at Adrenalin Forrest.

 The next week on Monday we were ment to go sailing but it was cancelled so we did some Christmas art.

On the last day we went to mega air and we did top team. Mega air is a trampoline park in hornby. Top Team is a bunch of activity's like mega puzzles and water activity's. Here are some photos of us doing those activity's.

Thanks for reading my post!

25 year old me letter.

For the last week we have been working on a letter to a 25 year old me. The story was a reminder of what our goals and dreams were when we were 11. Hope you enjoy.

Dear future me,

By the time you read this you would be around 25 years old. This is a reminder of your dreams and goals were when you were 10.

This was you career idea, you were going to do amazing in school and go to university to be a mechanic / engineer. You would have an amazing career and you would get lots of money for fixing and installing parts. You would get famous and make your own company.

If you couldn’t tell you love your Motorsports. You had a plan to become a race driver and then try to race on the bathurst 1000 in V8 super cars.

You love to travel and you would love to travel to 5 exotic places. First you would love to go to Gold Coast, The coliseum in Rome, you would love to go to Hawaii, Italy and Canada.

After all of that travelling you have decided to settle down in a good house that mr scott but, and get a wife and have some kids.

Your sincerely.

11 year old you.