STRUCTURES OF LIFEInvestigation 4 Part 4 Fingerprints Complete

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STRUCTURES OF LIFE—Investigation 4, Part 4: Fingerprints Complete Teacher Notes

STRUCTURES OF LIFE—Investigation 4, Part 4: Fingerprints Complete Teacher Notes

Investigation 4, Part 4 Hand Texture Run your fingers across the palm of your

Investigation 4, Part 4 Hand Texture Run your fingers across the palm of your hand. Describe how it feels. • Even though your hands feel smooth, they have texture. The texture is caused by high and low places on the skin. The high and low places on the skin of your palm are very slight, so we will need a special technique to help us see the texture. IG pg. 321, Steps 1– 2

Investigation 4, Part 4 Carbon Printing Procedure: a. Get a small piece of scratch

Investigation 4, Part 4 Carbon Printing Procedure: a. Get a small piece of scratch paper. b. Scribble on it with a pencil. c. Rub the scribble mark on the palm of your hand just under your pinky finger. d. Stick a piece of tape, about 4 cm long, tightly to the carbon on your hand. e. Gently pull the tape off your hand, and stick it to a piece of white paper. Study the print with a hand lens. This technique, called carbon printing, is useful for looking at patterns on finely textured objects, like our hands. IG pg. 321, Steps 3– 4

Investigation 4, Part 4 Hand Carbon Prints What do you see in the carbon

Investigation 4, Part 4 Hand Carbon Prints What do you see in the carbon prints of your hands? Why do the lines in your hand become visible using the carbon-printing technique? Let's use the carbon-printing technique to make a set of your fingerprints! IG pg. 322, Step 5

Investigation 4, Part 4 Focus Question How are fingerprints alike and different? IG pg.

Investigation 4, Part 4 Focus Question How are fingerprints alike and different? IG pg. 322, Step 6

Investigation 4, Part 4 Carbon Finger Printing a. Each person should put 5 pieces

Investigation 4, Part 4 Carbon Finger Printing a. Each person should put 5 pieces of tape, about 4 cm long, on the edge of the table. b. Rub, don't roll, carbon on one finger. Make sure you cover the whole pad of the finger to the first joint. c. Stick a piece of tape onto the finger the long way. d. Stick the carbon print on the corresponding finger on the notebook sheet. Repeat the process for the other fingers. Hints: Don't put too much carbon on your finger! Print the entire pad of your finger, not just the tip! a b • • c IG pg. 322– 323, Steps 7– 8

Investigation 4, Part 4 Fingerprints Describe your fingerprints. What patterns, if any, do you

Investigation 4, Part 4 Fingerprints Describe your fingerprints. What patterns, if any, do you observe? Do you notice any similarities in the prints? Is there any way you can group the prints? IG pg. 323, Step 9

Investigation 4, Part 4 Fingerprint Patterns There are three basic patterns of fingerprints. Whorl:

Investigation 4, Part 4 Fingerprint Patterns There are three basic patterns of fingerprints. Whorl: The lines go in circles. All lines come back to the place where they started. Arch: The lines start on one side of the print, rise, fall, and exit on the opposite side of the print. Loop: The lines start on one side of the print, rise, and then turn around and exit on the same side. IG pg. 323– 324, Steps 10– 11

Investigation 4, Part 4 Compare Thumbprints Look at your thumbprints. How many of you

Investigation 4, Part 4 Compare Thumbprints Look at your thumbprints. How many of you have the whorl pattern? arch pattern? loop pattern? How can we make a permanent record of our thumbprints? IG pg. 324, Step 12

Investigation 4, Part 4 Thumbprint Bar Graph whorl arch loop IG pg. 324, Step

Investigation 4, Part 4 Thumbprint Bar Graph whorl arch loop IG pg. 324, Step 13

Investigation 4, Part 4 Focus Question How are fingerprints alike and different? IG pg.

Investigation 4, Part 4 Focus Question How are fingerprints alike and different? IG pg. 325, Steps 14– 15

Investigation 4, Part 4 Clean Up! Return the tape and hand lenses to the

Investigation 4, Part 4 Clean Up! Return the tape and hand lenses to the materials station. IG pg. 325, Step 16

Investigation 4, Part 4 Reading in Science Resources Investigation 4: Human Body The Human

Investigation 4, Part 4 Reading in Science Resources Investigation 4: Human Body The Human Skeleton ………………. 74 Barn Owls ……………………… 78 Fossils ………………………. . 81 Skeletons on the Outside ……………. . 89 Crayfish, Snails, and Humans …………. . 91 Your Amazing Opposable Thumbs ………………. . 93 Joints and Muscles ………………… 94 Fingerprints ……………………. 100 Supertwins ……………………. . 104 IG pg. 326– 327, Steps 17– 20

Investigation 4, Part 4 Investigation 4 Vocabulary Review bone joint skeleton system skeletal system

Investigation 4, Part 4 Investigation 4 Vocabulary Review bone joint skeleton system skeletal system skull torso support protection movement characteristic articulated opposable thumb hinge joint gliding joint ball-and-socket joint muscle contract skeletal muscle tendon tissue pattern fingerprint whorl arch loop IG pg. 328, Step 21

Investigation 4, Part 4 Wrap-Up In your groups, review the focus questions from Investigation

Investigation 4, Part 4 Wrap-Up In your groups, review the focus questions from Investigation 4. What are the functions of the skeletal system? In what ways are the skeletons of a rodent and a human similar? What makes our skeletal system flexible? How are fingerprints alike and different? IG pg. 328– 329, Steps 22– 23

Investigation 4, Part 4 Structures of Life FOSS Program Overview

Investigation 4, Part 4 Structures of Life FOSS Program Overview