Who Stole My Heart

8/3/2019 Who Stole My Heart

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Who StoleMy Heart?

An exciting unit that mixes in some mystery and

critical thinking in with yourValentine’s Day theme!



Note to Teacher:

Things to get ready prior to the unit:

*Hide a paper heart in one child’s backpack. To make it less time consuming, yocan hide a heart in a boy’s backpack and another one in a girl’s backpack. Thehave the girl’s find the girl print and the boy’s find the boy print. Put the names of the “guilty” students in a manila envelope with the cards provided.

*Give each detective a file folder and have them write their name on the tab. Havthem use this folder to hold all of their activity sheets.

*Give each child a mini notebook to jot down clues as they try to solve themystery (can be found in multi-packs at Big Lots! and The Dollar Tree):

*To add to the search, give each child a pair of mystery glasses (can be found atparty stores in a multi-pack or at the Dollar Tree):

*Have rolls of clear tape, sharpened pencils, and magnifying glasses on hand.

*Wear a badge that identifies you as Officer _________ or Detective ________



To Start the Lesson:

Tell the students that you are going to set up a mystery of your own! Tell thethat you have secretly placed a heart in 2 backpacks (one boy and one girl) andthey have to figure out who “took” them by matching a fingerprint that waslifted from the scene of the crime to one of their classmate’s.

Begin by introducing the vocabulary words. Teach them about the differentkinds of fingerprints using “The Fingerprint Files” sheet. Complete the practicesheet together (answers are: loop, plain arch, whorl, tented arch). If you’vepurchased mini notebooks, have them practice drawing the various fingerprints iit; if not, simply have them practice on a blank piece of paper.

Here’s a link to a site with a fingerprint matching game:

http://www.nist.gov/public_affairs/licweb/suspect.htm Next, have each student use their pencil to rub a solid square on a piece of scrappaper. Have them take their own thumbprint by rolling it onto the pencil markand then rolling it onto the piece of clear tape. Next, stick the tape to the boxon the “Fingerprint Lab” sheet and have them write their name on the line.Collect each child’s thumbprint.

When the students are not around, take out the prints belonging to the 2children whose backpack contains a heart. Make one copy of these “suspect”prints, cut out only the print, and then copy the boy’s print for each boy inclass and the girl’s print for each girl in class. If your copier has a photosetting, use it! Otherwise, lighten it a bit.

Give every child their fingerprint back and have them place it on their desk. Pa

out the “Who Stole My Heart?” sheet along with the suspect’s fingerprint. Havethem glue the mystery print inside of the box on this sheet.

Then, using their magnifying glass, they can move from desk to desk like forensidetectives as they try to figure out whose print it is.

http://www.nist.gov/public_affairs/licweb/suspect.htm





Students can enter up to 5 suspects on their recording sheet. They will use theclues they listed to make their final prediction. End by taking out the manilaenvelope and reveal the guilty students! Finally, complete the reflection sheet ansend all items home in their detective file folder.

Facts about fingerprints:

*It is true…no two fingerprints are alike. Even identical twins have differentfingerprints.

*Fingerprints are impressions left behind from the ridges on our fingers. Theseridges act as traction and help us grab things.

*We don’t outgrow our fingerprints. They start to form about 12 weeks into oudevelopment and remain the same throughout our lives!

*A koala’s fingerprints are almost identical to humans!! However, koalas do nothave prints on their palms and they have 2 thumbs on each hand.

*Only severe injury will change your fingerprints. Cutting, burning, and scrapinthem will not destroy your prints. They will form again when the new skill growsback.



Photos:



Who StoleMy Heart?

Glue this to the outside of a manila envelope:

Write the “guilty” names on the cards below andplace them inside of the envelope:

And the heart was found in

the backpack belonging to…

______________________

And the heart was found inthe backpack belonging to…

______________________



Vocabularycrime: an act that is against the law

mystery: something that is unknown or secret

alibi: a plea that an accused person gives to show that they were not at the scene of the crime

sleuth: a detective or investigatorvictim: someone who is harmed or suffers a loss due

to the crime

evidence: someone or something that proves who

committed the crime

suspects: a person who seems to have a reason tocommit the crime

clue: an object or piece of information that helpssolve the crime

witness: a person who saw or has informationabout the crime



T e i e p i t i e Featuring Detective ______________________a b

Loop : The arch enters either side of the print , forms an

oval or circle and goes back out the same side it entered .

Loops occur in about 60 to 70 % of prints found .

Whorls : These prints have a spiral in the middle with hills on top and straight lines on the bottom of the print .

Whorls occur in about 35 to 45 % of prints .

Tented Arch : These prints go from one side to the

other without looping or going back . The middle has

a sharper tip like a tall rollercoaster.

Plain Arch : These go from one side of the print to the

other without looping or going back . The middle looks like a small hill. Arches occur in about 5 % of prints .

Look at your thumb using the magnifying glass..Which type of print do you have ? _______________________a b



Investigation Time Featuring Detective ______________________

Type of Print : __________________

Why ? ______________________

Type of Print : __________________

Why ? ______________________

Type of Print : __________________

Why ? ______________________

Type of Print : __________________

Why ? ______________________



Fingerprint Lab

This print belongs to suspect :

__________________

Fingerprint Lab


____________________

Fi ge p i t La Fingerprint Lab


___________________


____________________



Who Stole My Heart?

Suspects Type of print Clues

By Detective :

This is thethumbprint fromthe person whostole the heart:

This type of fingerprinthas _________________

____________________

____________________

Who stole the heart? _____________________________________

I think this is the guilty person because ______________________

_____________________________________________________



Closing Thoughtsa self -reflection on today ’s investigation

By Detective

a b

Today I learned _______________________________________________

___________________________________________________________

The coolest part of my job was ___________________________________

because _____________________________________________________

The most difficult part of my job was ______________________________

because _____________________________________________________

Two facts I learned :

*___________________________________________________________

*___________________________________________________________

One opinion I have is ___________________________________________

Who Stole My Heart

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