IU 4 Instructional Strategy
Introduction:
IU 4 is a continuation of the Develop phase. In this phase, activities are created to help
the student achieve the instructional goal. These activities are listed as beginning, middle,
and end activities. After developing the activities, media and method of delivery are
selected. Rough draft materials will also be included in IU4.
Instructional Goal:
Upon completion of the Instructional Unit, Forensic Science students will be able to
correctly match unknown fingerprints from a mock crime scene to a suspects known
fingerprints by 1) classifying fingerprint patterns, 2) sub-classifying fingerprint patterns
and 3) locating, identifying, and matching fingerprint ridge characteristics (minutiae).
Event
Beginning
Activities
Instructional Strategy
Gain
Attention
To engage students a picture of a
crime scene will be shown.
Objectives
Questions: What type of evidence
could a suspect leave behind
unknowingly? How could the police
match a suspect to a victim, crime
scene, or other evidence?
The purpose of this IU is to train
students in the comparison and
identification of fingerprints from a
mock crime scene. Fingerprints are
the most common type of evidence
found at crime scenes.
The performance objectives are:
1. Given fingerprint exemplars
(12-15 fingerprints) (CN),
students will classify prints as
Loops, Arches, or Whorls (B)
with 100% accuracy (CR).
2. Using fingerprint exemplars
from previous step (CN),
students will identify
respective sub-classes (B)
with 100% accuracy (CR).
Teacher or
Student
Student: Students
will look at a photo
of the crime scene.
Questions will be
underneath the
photo.
Time: 2 minutes
Students: Students
will read the lesson
objectives that they
must complete in
order to correctly
solve the mock
crime scene
scenario.
Time: 1 minute
3. Shown a variety of fingerprint
exemplars (5 fingerprints)
(CN), students will locate and
identify 8 -12 minutiae on
each fingerprint exemplar (B)
with 100% accuracy (CR).
Prerequisites
4. Given a mock crime scene
with fingerprint evidence
(CN), students will evaluate
evidence and determine the
correct suspect (B) with 100%
accuracy (CR).
The pre-requisite skills for this
lesson are:
1. Students will recall
vocabulary from previous
chapters.
2. Students will understand
differences between class
evidence and individual
evidence.
3. Students will take a pre-test
covering forensic science
vocabulary.
Student (1): Will
be asked to recall
prior vocabulary
related to
Fingerprint
Identification such
as evidence, crime
scene, class
characteristics, and
individual
characteristics.
Student(2):
Student will take a
pre-test on forensic
science vocabulary.
Time: 3 minutes
Present the
Content
A PowerPoint presentation will be
used to:
1. Define fingerprint.
Student: View the
PowerPoint.
2. List the 3 main classes and the Time: 10 minutes
8 subclasses of fingerprints.
Middle
Activities
3. Define minutiae and visually
depict the types of minutiae
used in Fingerprint
identification.
Guided
The following activities will be
Student (1):
Practice
completed by the students with
assistance of the teacher:
1. Students will identify
fingerprint class and subclass
on exemplar fingerprints
shown on screen.
2. Students will locate and
identify fingerprint minutiae
on sample fingerprint shown
on screen.
Student will view a
self-assessment
PowerPoint that
shows various
fingerprint patterns.
Student (2):
Student will label a
sample fingerprint
with correct
minutiae.
Time: 5 minutes
Independent
Practice
Feedback
Completion of an assignment that
covers all concepts presented in this
instructional unit.
Give the students an opportunity to
clarify any issues regarding
fingerprint classes, subclasses and
minutiae. Review the assignment
and re-teach any areas that need
attention.
Student: Complete
the assignment to
show understanding
of performance
objectives.
Time: 10 minutes
Teacher: Answer
questions students
may have and use
examples to better
explain for
understanding.
Student: Ask
questions to better
understand
concepts.
Assessment
A mock crime scene will be give to
students to assess mastery of
performance objectives.
Time: 2 minutes
Student: Read the
crime scene details
and assess the
fingerprint
evidence. Use
knowledge of
fingerprint classes,
sub classes, and
minutiae to
correctly match the
unknown
fingerprint sample
to one of the
suspects.
Closure
Ending
Activities
Teacher will close by summarizing
the main concepts covered:
Fingerprint classes and subclasses
and minutiae.
Time: 10 minutes
Student: Turn in
exit ticket with one
thing you learned
today.
Time: 2 minutes
Media Selection and Delivery System
This instructional unit is an E-Learning module. The students will be able to login, read
content materials, complete activities, and take assessments without a direct teach from
the instructor. The students will be able to access all instructional unit materials through
the computers in the science computer lab or on mobile devices.
Desktop computer with high-speed Internet connection – The computer will be used
by the student to download and view course content, answer discussion questions,
complete activities, and assess learned skills. It will be used throughout the entire
instructional unit.
Blackboard Course Site – This is the delivery system for the instructional unit. This
learning management system will allow the instructor to develop and host the
instructional unit for students. It is accessible to traditional computers and mobile
devices. Students must create a free user account and be enrolled in the course to access
all course materials. This will be used through out the instructional unit.
PowerPoint – Course topics will be presented using PowerPoint. Students will
download and view the key topics covered in the presentation. The student will use it
during the presentation of the content and for a self-assessment covering fingerprint
patterns.
Electronic Handouts – Electronic handouts in the form of fillable PDFs will be used by
students in the independent practice section. The students will download these handouts,
complete them, and submit them to the instructor for grading.
First Draft Materials
1. Gain Attention:
(1) http://www.imagesource.com/stock-image/Crime-Scene-IDI21NQ.html
Questions: What type of evidence could a suspect leave behind unknowingly? How
could the police match a suspect to a victim, crime scene, or other evidence?
2. Goal and Objectives:
This instructional unit will help teach forensic science students the basic concepts of
fingerprint patterns and ridge details (minutiae).
Instructional Goal: Upon completion of the Instructional Unit, Forensic Science students
will be able to correctly match unknown fingerprints from a mock crime scene to a
suspects known fingerprints by 1) classifying fingerprint patterns, 2) sub-classifying
fingerprint patterns and 3) locating, identifying, and matching fingerprint ridge
characteristics (minutiae).
3. Prerequisites:
The prerequisite skills for this instructional unit are prior forensic science vocabulary.
Students will take a pretest that will assess their understanding of prior vocabulary such
as: Evidence, Crime Scene, Class characteristics, Individual Characteristics.
4. Content:
Students will download and view a PowerPoint presentation that covers key topics such
as 3 main fingerprint patterns, sub-classes of the main patterns, and minutiae.
5. Guided Practice:
Students will view a PowerPoint that will show various fingerprints. The students will
attempt to correctly identify the type and sub-class of each fingerprint shown.
6. Independent Practice:
Students will be shown Electronic Handouts (PDFs) with various Fingerprint patterns.
Students will attempt to correctly identify all fingerprint patterns on the handouts.
Students will be shown a handout with an enlarged fingerprint. Students will attempt to
identify minutiae that have been highlighted.
7. Feedback:
Students will have an opportunity to post questions to the instructor or fellow students to
help clear up any misconceptions via blackboard course site class page.
8. Assessment:
Students will download a mock crime scene scenario. The students must read all
pertinent information regarding the crime scene, evidence, and suspects. Students must
utilized skill learned in prior activities to correctly identify the perpetrator.
9. Closure:
On Blackboard, students will submit an exit ticket to the instructor with 1 thing they
already knew about fingerprints, 1 thing they learned from the lesson, and 1 thing about
fingerprints they would like more information about.