Worksheet Grade 3 Social Studies & Civics

Curlew's Water System Timeline: A Grade 3 History Worksheet

Students read the fictional town of Curlew's water timeline, from hand pump days to water meters, and subtract to find how many years passed between changes.

Grade: Grade 3
Subject: Social Studies & Civics
Material: Worksheet
Time: 30 min
Prep: No prep
Materials: None

Standards

D2.Geo.5.3-5 C3 Framework

Explain how the cultural and environmental characteristics of places change over time.

How this material aligns: Items 1 through 3 and 7 have students read Curlew's water timeline and explain how the town's water system, and daily life with it, changed over time.

All materials for D2.Geo.5.3-5 →

3.NBT.A.2 Common Core Math

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

How this material aligns: Items 4 through 6 ask students to subtract the years-ago numbers on the timeline to find how many years passed between each change.

All materials for 3.NBT.A.2 →

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This material is in the public domain (CC0) and may be copied, edited, and shared freely, without attribution. Updated 2026-07-23.

Objectives

Students will put the changes in a town's water system in time order.
Students will subtract to find how many years passed between events on a timeline.

Vocabulary

Water tower: A water tower is a big tank raised high above town that stores drinking water. Its height is what pushes water through the pipes, keeping the pressure steady even when the power goes out.
Water meter: A device that measures how much water a home or business uses so the utility can bill fairly. Reading the meter can also reveal hidden leaks.

Also: timeline, hand pump

Teacher overview

Curlew is a fictional town whose water system grew in four big steps, and this worksheet turns those steps into a timeline students can both read and compute with. The history questions ask how each change altered daily life in the same place, while the subtraction items use the years-ago numbers to find the gaps between changes, which pairs the grade 3 focus on how places change over time with grade 3 subtraction. Students need no outside knowledge, because every answer appears in the timeline itself.

Curlew's Water System Timeline: A Grade 3 History Worksheet — Grade 3 Social Studies & Civics

Name: ____________________________ Date: ______________

Student Worksheet

Read the timeline for the town of Curlew. Then answer the questions.

Curlew's water, step by step

About 130 years ago: families filled buckets at the hand pump in the town square. Every drop was carried home by hand.
About 110 years ago: the town built its water tower and laid the first pipes. Water reached kitchen taps for the first time.
About 70 years ago: the town built its treatment plant. From then on, the water was cleaned and tested before it reached the pipes.
About 25 years ago: the town added a water meter at every home, so each family could see how much water it used.

What did Curlew families use first to get their water?
What did the town build about 110 years ago, and what changed at home because of it?
Write these four things in time order, from first to last: water meters, hand pump, treatment plant, water tower.
The hand pump days were about 130 years ago. The water tower came about 110 years ago. How many years passed between them?
The water tower came about 110 years ago. The treatment plant came about 70 years ago. How many years passed between them?
The treatment plant came about 70 years ago. The meters came about 25 years ago. How many years passed between them?
How did the water tower change morning chores in Curlew homes?
What might Curlew add to its water system next? Give one idea and one reason.

From Water for Schools (waterforschools.org). This material is in the public domain (CC0) and may be copied, edited, and shared freely.

Answer Key

Answer: The hand pump in the town square. The first timeline entry says families filled buckets there and carried every drop home.
Answer: The water tower and the first pipes. The timeline says water reached kitchen taps for the first time, so families no longer had to fetch it.
Answer: Hand pump, water tower, treatment plant, water meters. This follows the timeline from about 130 years ago down to about 25 years ago.
Answer: 20 years. The difference is 130 − 110 = 20.
Answer: 40 years. The difference is 110 − 70 = 40.
Answer: 45 years. The difference is 70 − 25 = 45.
Answer: Families stopped carrying buckets from the square because water came through pipes to the tap. Any answer naming the end of hauling water by hand earns full credit.
Answer: Answers will vary. A strong answer names one addition, such as new pipes, a bigger tank, or a second plant, and gives a reason tied to the town growing or equipment getting old.

Differentiation

Support

Have students number the four timeline entries 1 through 4 before starting, and provide a blank number line marked 130, 110, 70, and 25 so the subtraction items can be solved by counting the jumps.

Extension

Ask students to add a fifth timeline entry of their own invention, place it the correct number of years ago, and write one subtraction problem about it for a partner to solve.

ELL supports

Pre-teach "pump," "tower," "plant," and "meter" with a small sketch beside each word, and read the timeline aloud once before independent work. Accept item 3 as a numbered list of the four sketches instead of written words.

Extensions

Have students interview an older family member or neighbor about one way their home's water changed over the years, then add that memory as a labeled entry on a personal timeline in the same style as Curlew's.