Let's solve each question one by one based on the concept of
informal units of measurement. Informal units are non-standard objects used to measure length, such as hand spans, foot lengths, paper clips, or blocks.
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Question 1: Select the most appropriate unit of measurement to measure the length of a sand pit.
Options:
- A) Paperclip
- B) Blocks (like LEGO)
- C) Foot
Analysis:
A sand pit is typically large — possibly several meters long. Using small units like paperclips or blocks would require counting hundreds or thousands of them, which is impractical and inefficient.
Using a
foot (or a person’s foot) as a unit is more reasonable for measuring larger areas like a sand pit. It's bigger than a paperclip or block and can give a decent estimate without too much counting.
✔ Correct Answer: C) Foot
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Question 2: Select the most appropriate unit of measurement to measure the length of a pencil.
Options:
- A) Hand
- B) Paperclip
- C) Foot
Analysis:
A pencil is usually around 15–20 cm long. Let’s evaluate:
- A
hand is about 8–10 cm wide — it could be used, but might not fit perfectly.
- A
paperclip is very small (~3–4 cm), so you'd need many to cover the pencil — not efficient.
- A
foot is too large — a pencil is shorter than a foot, so this won't work well.
The
paperclip is a small, consistent object that can be placed end-to-end along the pencil. It's a common informal unit in early education.
✔ Correct Answer: B) Paperclip
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Question 3: Select the most appropriate unit of measurement to measure the length of a table.
Options:
- A) Blocks
- B) Hand
- C) Foot
Analysis:
Tables are medium-sized objects — typically 1 to 2 meters long.
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Blocks are small and would require many to measure the table — not practical.
-
Hand span is about 10–15 cm; you’d need many hands to cover the table length.
-
Foot is about 25–30 cm — larger and easier to use. You can step along the table or place feet end-to-end.
So, using a
foot is more efficient and practical for measuring a table.
✔ Correct Answer: C) Foot
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✔ Final Answers:
1.
C) Foot
2.
B) Paperclip
3.
C) Foot
These choices reflect the best
informal units based on size and practicality for each object.
Parent Tip: Review the logic above to help your child master the concept of appropriate unit of measurement worksheet.
