Part A. My Fingerprint
We can use a hand lens to see our fingerprint clearly. Which fingerprint pattern do you have?
* Whorls - forms a circular or spiral pattern
* Loop - curves or bends but does not form a circle
* Arch - looks like a wave but not too curved
Part B. My Hand Span
We can use our hand span to measure things like your arms, legs, tables and others. You can do this by measuring from the tip of the thumb to the tip of the small finger.
How many hand spans does your arm measure?
How about you measure your mother's arm using your hand span? How many did you get?
Answer (2)
The answer explains fingerprint classification into whorls, loops, and arches, and describes how to measure arm length using hand span. It provides a step-by-step guide for measuring both your arm and your mother's arm, giving examples with calculation. This demonstrates understanding of measurement and biological uniqueness.
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Part A: My Fingerprint
Fingerprints are the unique patterns made by the ridges on your fingers. Different people can have different types of fingerprint patterns. Here are the main types:
Whorls : These form a circular or spiral pattern, resembling the shape of a whirlpool. To identify if you have this pattern, look for circles or spirals in your fingerprint.
Loops : These patterns curve or bend but do not form a complete circle. You can recognize loops by looking for lines that start on one side, rise to the center, and then exit on the same side they started.
Arches : These look like waves or hill shapes, with no such curved bends as in loops or circles like whorls.
To find out which pattern you have, use a hand lens to look at your fingerprint closely, and compare it to the descriptions above.
Part B: My Hand Span
Your hand span is a useful personal measuring tool. It is the distance from the tip of your thumb to the tip of your small finger when your hand is fully spread out. You can use this measurement to estimate the size of various objects like your arms, legs, tables, etc.
Measuring your arm : To measure your arm using your hand span, start by spreading your fingers as wide as they will go. Place your thumb at the beginning of your arm and note where your pinky finger reaches. Move your hand along your arm and repeat the measurement until you reach your shoulder.
Measuring your mother’s arm : Repeat the same process of measuring along your mother’s arm using your own hand span. Simply place your thumb on the starting point, stretch your fingers along her arm, and count how many spans it takes to measure her whole arm.
This exercise helps you understand how to use parts of your body to measure items in a fun and practical way!
