Answer & Explanation:In this activity, you will imagine that a room in your house or an area of your yard or driveway is a crime scene.In Part 1, you will stage your crime scene. You will imagine where evidence might be and place markers to represent the evidence. In Part 2, you will measure your crime scene and the location of your evidence. You should also make notes both on your notepad and later on the rough sketch if necessary. In Part 3, you will use the measurements to draw a rough sketch of your crime scene. Choose either an overhead view or a cross-projection for your rough sketch. You will then use your rough sketch to create a finished, scaled sketch in Part 4.must come up with own information, rough sketch of crime scene on grid and final sketch on grid plus all the details required.The 3 word docs that i attached are the instructions and the grid paper needed to do the assignment, please open all of them. The powerpoint is another way of telling u step by step instructions.must look at attachments and follow step by step!!!!
201609051831172016090219385920160824184759hs_for_01_05_lab_crime_scene_sketch_instructions_a11y__1___1_.docx
201609051831182016090219385120160824184740hs_for_01_05_lab_crime_scene_sketch_ga__1_.doc
201609051831172016090219385520160824184720hs_for_quarter_inch_grid_paper_a11y.docx
20160905183117201609021939271.05__1.06_crime_scene_sketch__1_.pptx
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Science | Laboratory Instructions | Laboratory: Crime Scene Sketch
Laboratory Instructions
Laboratory: Crime Scene Sketch
Materials
Supplied
Student Guide
Laboratory Guidelines
Optional
graph paper (4 grids per inch is best)
clipboard
string, tape, or chalk
Also Needed
pencil
index cards, 3″ × 5″ (10 to 20)
protractor
ruler
tape measure
magnetic compass (or another device to tell which direction is north, such as a GPS)
notepad
Advance Prep (2 days)
Review the list of materials for the lab prior to the lesson, because there are several items that you must supply.
Safety
Review the Laboratory Guidelines before conducting the lab.
You will stage a crime scene in this lab. Discuss your plans with your Learning Coach before staging your crime
scene.
Overview
In this activity, you will imagine that a room in your house or an area of your yard or driveway is a crime scene.
In Part 1, you will stage your crime scene. You will imagine where evidence might be and place markers to
represent the evidence. In Part 2, you will measure your crime scene and the location of your evidence. You
should also make notes both on your notepad and later on the rough sketch if necessary. In Part 3, you will use
the measurements to draw a rough sketch of your crime scene. Choose either an overhead view or a crossprojection for your rough sketch. You will then use your rough sketch to create a finished, scaled sketch in Part 4.
Part 1: Stage the Crime Scene
Procedure
1. Choose a room or an outdoor area to stage a crime scene. Here are some examples:
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Page 1 of 5
Science | Laboratory Instructions | Laboratory: Crime Scene Sketch
Basement—break-in or burglary
Living room—a fight
Backyard—a body discovered in a field
Driveway—hit-and-run accident
You can choose one of these examples, or you can create your own. Keep in mind that you will need to sketch
the scene—you may want to limit your scene to a simple rectangular area.
2. Imagine what the crime scene would look like. For example, there might be a broken window in a bedroom
with glass pieces on the floor. A fight in the living room might show signs of a struggle, such as overturned
furniture, overturned glasses, bloodstains, or a weapon. (Don’t actually break a window or scatter
bloodstains!)
3. Stage your crime scene. Think about the crime, what type of evidence might be present, and where that
evidence might be located. Use index cards to place markers in the scene at evidence locations. Label each
piece of evidence with a number (1, 2, 3, …). Include at least three pieces of evidence.
Remember: Discuss your plans to stage a crime scene with your Learning Coach.
Part 2: Measure the Crime Scene
In this part, you will record measurements and notes that you will use later in your rough and final sketches.
Procedure
1. Decide whether you will draw an Overhead View or a Cross-Projection.
2. Measure the perimeter of your crime scene. For example, if your scene is in a rectangular room, measure the
width and length of the room. If you are outdoors, you may need to lay out a perimeter. You can use string to
mark a perimeter if necessary. If you plan to do a Cross-Projection sketch, measure the height of your crime
scene (e.g., the height of the walls).
Record your measurements below, including the units (inches, feet, meters, centimeters, or degrees):
Dimensions of Crime Scene:
Record measurements here.
3. Identify your fixed baselines or reference points. If necessary, mark a baseline with a string, tape, or chalk.
4. Define the location of your evidence, using accurate measurements. Use one or more of the following
methods:
transecting baseline
rectangular coordinates
triangulation
polar coordinates
Choose measurement methods that are appropriate for your scene. Use a tape measure to measure distances
and a protractor to measure angles. You may need someone to assist you.
Write your measurements down in a log or table. Make sure to include the number from the index card to identify
your evidence. Also include the units of measure, for example, inches, feet, centimeters, meters, or degrees. You
use the the tables provided to enter measurements or make your own data tables.
Transecting Baseline
Label
Description of Evidence
Perpendicular Distance from Baseline (units)
1
2
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Science | Laboratory Instructions | Laboratory: Crime Scene Sketch
Label
Description of Evidence
Perpendicular Distance from Baseline (units)
3
Rectangular Coordinates
Label
Description of Evidence
Perpendicular
Distance from
Baseline A (units)
Perpendicular
Distance from
Baseline B (units)
1
2
3
Triangulation
Distance between Reference Point A and Reference Point B: ___________________ units
Label
Description of Evidence
Perpendicular
Distance from
Baseline A (units)
Perpendicular
Distance from
Baseline B (units)
Description of Evidence
Perpendicular
Distance from
Baseline A (units)
Perpendicular
Distance from
Baseline B (units)
1
2
3
Polar Coordinates
Label
1
2
3
Part 3: Make a Rough Sketch (Overhead or Cross-Projection) of the Crime Scene
Now that you have taken notes and recorded measurements, you are ready to make a rough sketch of the crime
scene. You can draw your rough sketch on a plain piece of paper, or you can use the quarter-inch grid paper
supplied as a material for this lab. Refer to the sample sketches in the lesson if necessary.
Procedure
1. Draw the perimeter of your crime scene. Make sure it is large enough to contain your crime scene. Use
arrows to show the dimensions of your crime scene, which you recorded in Part 2.
2. Use the compass to determine the direction of north. Mark the direction of north on your sketch with an arrow
and “N.”
3. Use rectangles, circles, or simple shapes to represent objects in your scene. Approximate the relative size of
each object. If you are indoors, draw doors and windows in their proper position. If necessary, take additional
measurements to help you sketch the main objects in the room.
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Page 3 of 5
Science | Laboratory Instructions | Laboratory: Crime Scene Sketch
(Tip: You do not need to include everything in your sketch. Include the main objects. Outside, the main
objects might include trees, vehicles, or buildings. Inside, the main objects might include chairs, sofas, or
tables.)
4. Sketch your pieces of evidence in place. Label the evidence with the number on the index card. Add the
measurements that you took in Part 2 for each piece of evidence. Use a dashed line to show a distance from
a baseline or a reference point.
5. Make a legend to describe the evidence.
6. At the top of the sketch, add the key information. Include the following. (Since this is a mock crime scene, you
can make up all the key information except the sketch artist. Add your name as the artist.)
Date of the rough sketch
Name of sketch artist
Affiliation of the sketch artist
Address of crime scene
Name of any victims
Type of crime suspected
Name of the lead investigator
Part 4: Make a Finished Sketch of the Crime Scene
Use your rough sketch to make a finished sketch. The finished sketch will be a scaled drawing.
Procedure
1. Use the quarter-inch grid paper (or paper of your own choosing) for the finished sketch. Record the scale you
1
plan to use on the paper. If you use the scale
inches =1 foot , each square on the grid paper will represent
4
1ft. Write “All measurements are approximate” under the scale.
2. Draw the dimensions of your crime scene to scale. For example, if your crime scene is a 20 ft by 15 foot
room, you can draw a rectangle that is 20 squares by 15 squares on the quarter-inch grid paper. You may
1
need to adjust your scale to fit your scene. For example, if your room looks too small, try
inch. = 1 foot. In
2
1
this case, two squares on the grid paper represent a foot. If your room is too large to fit, try
inches. = 2
4
feet.
3. Draw the rectangles, circles, or other shapes from the rough sketch. Include any measurements that you took
for these main objects. Be as precise as you can, using any drawing tools at your disposal.
4. Label the baselines or the reference points that you used for your measurements. Use a ruler and/or
protractor to locate each piece of evidence on the drawing. Remember to use the scale. If you need to draw a
line at an angle, convert the measurement to a single unit first, then multiply by the scale factor.
Example: Suppose you are using a scale of
1
in. =1 ft., and you need to convert 4 ft 6 in. to a scaled
4
measurement.
First convert the measurement to feet only:
4 ft 6 in = 4 1 ft = 4 1 ft.
12
2
Then multiply the measurement in feet by the scale factor:
1 4 1 = 1 4 + 1 = 1 + 1 = 1 1 in.
4
2
4
2
8
8
5. Make sure to include the following information on the final sketch:
Key information
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Science | Laboratory Instructions | Laboratory: Crime Scene Sketch
Direction north
Dimensions of the crime scene
Main objects in the crime scene
At least three pieces of evidence labeled with numbers
A legend describing each piece of evidence
Measurements locating each piece of evidence
A scale on the drawing
6. Add the date of the finished sketch.
Submit the Graded Assignment along with the finished crime scene sketch to your teacher.
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Page 5 of 5
Science | Graded Assignment | Crime Scene Sketch
Name:
Date:
Graded Assignment
Crime Scene Sketch
(25 points)
1. Use the ¼ in grid paper supplied as a material for this lab to create your final sketch. Make sure
to include the following information with your sketch:
Score
Key Information (at the top)
Date of the rough sketch
Date of the finished sketch
Name of sketch artist (your name)
Affiliation of the sketch artist
Address of crime scene
Name of any victims
Type of crime suspected
Name of the lead investigator.
Sketch:
Direction north
Dimensions of the crime scene
Main objects in the crime scene
At least three pieces of evidence labeled with numbers
A legend describing each piece of evidence
Measurements locating each piece of evidence
A scale on the drawing
Submit this Graded Assignment along with your final sketch to your teacher for a grade.
Your Score
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___ of 25
Page 1 of 1
Science | Resource | Graph Paper
Name:
Date:
Resource
Graph Paper
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Copying or distributing without K12’s written consent is prohibited.
Page 1 of 1
1.06 Crime Scene Sketch
GOALS FOR THIS LESSON
Describe the importance of accurate notes
and sketches, and the characteristics that
make each valuable when documenting or
reconstructing a crime scene.
Compare the documentation of a crime scene
to the scientific procedures (such as data
collection and data analysis).
Develop a crime scene sketch.
Develop notes about a possible crime scene.
Crime scenes have to be documented with notes, photographs, and sketches
• Investigators take notes on observations, initial impressions, details of the scene,
witness statements
• Photographers take photos of the evidence using different angles, ranges, overall
scene, and different lighting.
• Crime scene sketch artist makes an initial rough sketch at the crime scene
Why do we need a sketch with photos and videos?
The crime scene sketch:
Sketches give an overall view of the
crime scene.
It would take several photographs to
provide the same information.
Sketches relate pieces of evidence to
each other and the surroundings.
A sketch provides measurements, which
aren’t captured in photographs.
Sketches give a common view.
A sketch refreshes the memory of
investigators, illustrates the testimony of
witnesses, and provides a common
reference for the judge, jury, and
lawyers.
Sketches are necessary for crime scene
reconstruction. They can be used to
illustrate the sequence of events
Written notes clarify difficult issues and jog the artist’s memory when
making the final sketch. The more thorough the written notes by the
artist, the more complete and accurate the final sketch will be.
Ahh Math!
Sketching a crime scene starts with
accurate measurements.
Measure and Outline Area
• North should be at the top of the paper.
• Determine Scale
• {Take the longest measurement at the scene
and divide it by the longest measurement of the
paper used for sketching.
{½” = 1’ small rooms
{¼” = 1’ large rooms
{1/8” = 1’ very large rooms
{½” = 10’ large buildings
{1/8” = 10’ large land area
Measure from fixed locations
• Walls
• Trees
• Telephone poles
• Corners
• Curbs
• Outlets
• Any Immovable Object
Crime scene sketches include measurements to record the location of evidence in the
scene
The following are common measurement methods:
Transecting baseline
Rectangular coordinates
Triangulation
Polar coordinates
The location of each object is recorded in a log.
The measurements are the equivalent of data in a scientific investigation.
Baseline Method
Run a baseline from one fixed point to another, from
which measurements are taken at right angles.
Works best for
outside crime
scenes
•
•
•
•
•
•
Trees
Telephone poles
Corners
Curbs
Outlets
Any Immovable Object
Rectangular Coordinate Method
Uses two adjacent walls as fixed points as distances are measured at right angles
Use 2 walls as baselines and measure to the object
This is the most common
method best for interior crime
scenes
Triangulation Method
Common in outdoor scenes uses straight-line measurements from two fixed objects to the
evidence to create a triangle with evidence in the angle formed by two straight lines.
Most accurate but
most time consuming
Polar Coordinates Method
(Compass point Method)
Uses a protractor to measure the angle formed by two lines
Use a wall
as one of
the “lines
types of crime scene ske
Overview or floor plan sketch – a layout of the scene horizontally as seen from above
types of crime scene
sketches
Elevation sketch – a layout of the scene vertically as seen from a side
types of crime scene
sketches
Cross-projection (exploded view) sketch – a layout as though a room was an unfolded box
types of crime scene
sketches
Perspective sketch – a three-dimensional sketch of an object
Crime scene artists create finished sketches from the rough sketch.
The crime scene artist makes a rough sketch of
the scene.
The rough sketch becomes part of the crime
scene investigation file.
The artist uses the rough sketch later to make
a finished sketch of the scene.
Finished sketches are often drawn to scale.
A scale is a small distance on the drawing that
represents a larger distance at the scene.
Drawings often use a scale of ¼ inch = 1 foot.
This is the common grid spacing on most graph
paper.
The finished drawing is also part of the investigation file and is often used in court. The finished
drawing is the equivalent of data analysis or a scientific report in a scientific investigation.
Now it is your turn!
Do you have…
Not in
box
from K12
•
•
•
•
•
•
•
•
•
graph paper (4 grids per inch is best)
clipboard
string, tape, or chalk
pencil
index cards, 3″ × 5″ (10 to 20)
protractor
ruler
tape measure
magnetic compass
(or another device to tell which direction is
north, such as a GPS there are apps on
smartphones too)
FROM YOUR BOX
• Student Guide
• Laboratory Guidelines
You will stage a crime scene in this lab
Discuss your plans with your Learning Coach before staging your crime
scene.
Part 1: Stage the Crime Scene
1. Choose a room or an outdoor area to stage a crime scene.
Here are some examples:
• Basement—break-in or burglary
• Living room—a fight
• Backyard—a body discovered in a field
• Driveway—hit-and-run accident
You can choose one of these examples, or you can create your own.
Keep in mind that you will need to sketch the scene—you may want to limit your
scene to a simple rectangular area.
You will stage a crime scene in this lab
Discuss your plans with your Learning Coach before staging your crime
scene.
Part 1: Stage the Crime Scene
2. Imagine what the crime scene
would look like.
For example, there might be a
broken window in a
bedroom with glass pieces on the
floor.
A fight in the living room might
show signs of a struggle, such as
overturned furniture, overturned
glasses, bloodstains, or a weapon.
(Don’t actually break a window or scatter bloodstains!)
You will stage a crime scene in this lab
Discuss your plans with your Learning Coach before staging
your crime scene.
Part 1: Stage the Crime Scene
Stage your crime scene.
Think about the crime, what type of
evidence might be present, and where
that evidence might be located.
Use index cards to place markers in the
scene at evidence locations.
Label each piece of evidence with a number (1, 2, 3, …).
Include at least three pieces of evidence.
You will stage a crime scene in this lab
Discuss your plans with your Learning Coach before staging
your crime scene.
Part 1: Stage the Crime Scene
Stage your crime scene.
Think about the crime, what type of
evidence might be present, and where
that evidence might be located.
Use index cards to place markers in the
scene at evidence locations.
Label each piece of evidence with a number (1, 2, 3, …).
Include at least three pieces of evidence.
You will stage a crime scene in this lab
Part 2: Measure the Crime Scene
In this part, you will record measurements and notes that you will use later in your rough and final sketches.
1. Decide whether you will draw an Overhead
View or a Cross-Projection.
2. Measure the perimeter of your crime scene.
For example, if your scene is in a rectangular room,
measure the width and length of the room.
If you are outdoors, you may need to lay out a perimeter.
You can use string to mark a perimeter if necessary.
If you plan to do a Cross-Projection sketch, measure the height of your crime scene
(e.g., the height of the walls).
Record your measurements on the worksheet, including the units (inches, feet, meters,
centimeters, or degrees):
You will stage a crime scene in this lab
Part 2: Measure the Crime Scene
In this part, you will record measurements and notes that you will use later in your rough and final sketches.
3. Identify your fixed baselines or reference points.
If necessary, mark a baseline with a string, tape, or
chalk.
4. Define the location of your evidence, using
accurate measurements.
Use one or more of the following methods:
1.
2.
3.
4.
• transecting baseline
• rectangular coordinates
• triangulation
• polar coordinates
You will stage a crime scene in this lab
Part 2: Measure the Crime Scene
In this part, you will record measurements and notes that you will use later in your rough and final sketches.
Choose measurement methods that are
appropriate for your scene. Use a tape measure to
measure distances and a protractor to measure
angles.
You may need someone to assist you.
Write your measurements down in a log or table.
Make sure to include the number from the index
card to identify your evidence. Also include the
units of measure, for example, inches, feet,
centimeters, meters, or degrees.
…
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