Classroom activity Grade 4 English Language Arts
Riddle Stations on Marlbury's Water Route: A Grade 4 Activity
A 45-minute grade 4 station activity in which groups write and swap riddles for six stops on a fictional town's water route, from a cloud to a kitchen tap.
Objectives
- Students will write a riddle that uses three facts and two domain words.
- Students will name the stop a riddle describes and cite the deciding detail.
- Students will explain what tells two water-holding stops apart.
Vocabulary
- Reservoir
- A human-made lake, usually created by a dam, that stores water for later. Reservoirs supply cities and farms and help control floods.
- 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.
Also: intake, filter, main
Teacher overview
Six stations stand for six stops that a drop of water passes on its way through the fictional town of Marlbury, beginning as a cloud over a ridge and ending at a kitchen tap. Groups of four rotate to a station, read its fact card, and write a riddle in the first person that gives three of the card's facts without naming the stop. Groups then swap riddles and guess, which forces the writer to include details that separate one stop from every other. The route matters to the task, because two of the stations hold water and two take things out of it, so a riddle works only when it names what makes its own stop different from the rest.
Activity Directions
- Setup before class (moderate prep). Print the six station cards from the Student Handout, one per sheet, and post them around the room in route order: the cloud, the reservoir, the intake, the filter room, the water tower, and the tap. Set three index cards at each station.
- Form groups and assign stations (4 min). Make six groups of about four students. Send each group to one station. Tell the class that each group will write a riddle for its own stop and then try to solve riddles written by other groups.
- Read and mark the card (6 min). Each group reads its station card aloud within the group and circles the three facts it thinks are hardest to confuse with another stop. Remind groups that "I hold water" is true at more than one station, so it decides nothing on its own.
- Write the riddle (14 min). Each group writes one riddle on an index card, using the first person and the sentence frame "Where am I?" at the end. A finished riddle gives three facts from the card and uses at least two of the card's underlined words. The stop's name may not appear anywhere on the index card. Groups write the stop's name on the back.
- Swap and solve (12 min). Rotate the index cards one station to the right. Each group reads the riddle it receives, writes its guess and the deciding detail on scrap paper, then checks the back of the card. Rotate twice more, so every group solves three riddles. Stop when the timer ends or when every group has solved three, whichever comes first.
- Practice items (5 min). Students answer handout items 1 through 6 on their own, using the six station cards printed on the handout.
- Debrief (4 min). Ask the two questions in handout items 7 and 8 and take answers from three groups before students write. Close by asking which riddle in the room was hardest to solve and which single detail finally gave it away.
Student Handout
The six stops on Marlbury's water route
Station 1: The cloud over Birchmoor Ridge. I am made of tiny drops of water floating in cold air. Rain and snow fall out of me onto the ridge west of town. Some of what falls soaks into the soil, and the rest runs downhill in small streams. Underlined words: cloud, rain, runoff.
Station 2: Marlbury Reservoir. I am a lake the town made by building a dam across a creek. I hold enough water to carry Marlbury through a dry summer. Ducks land on me, and in August my edges pull back and show mud. Underlined words: reservoir, dam, store.
Station 3: The intake at the north end. I am a pipe mouth under the surface with a metal screen across me. Water enters me on its way to the plant, and my screen keeps out sticks, leaves, and fish. Divers check me twice a year. Underlined words: intake, screen, pump.
Station 4: The filter room at the water plant. I am a row of deep concrete boxes filled with clean sand. Water sinks slowly through my sand, and the last bits of dirt stay behind. Every night a crew pushes clean water backward through me to wash my sand out. Underlined words: filter, sand, backwash.
Station 5: The water tower on Jessup Hill. I stand on legs above every roof in town. I am filled at night and drawn down during the day, and being up high is what pushes water through the pipes below me. I hold about one day of water for Marlbury. Underlined words: tower, pressure, store.
Station 6: The kitchen tap at 12 Galewood Lane. I am the last stop on the route. A small pipe brings water to me from a bigger pipe called a main under the street. When the handle turns, I run, and what leaves me goes down the drain to a different plant. Underlined words: tap, main, drain.
Answer items 1 through 8.
- "Sticks and leaves stop here. Fish never get past me. Divers come to see me twice a year. Where am I?" Name the stop.
- "I am filled at night and drawn down during the day. I stand above every roof. Being high is my whole job. Where am I?" Name the stop.
- "Water sinks through me slowly. My sand catches the last of the dirt. Crews wash me backward every night. Where am I?" Name the stop.
- "A dam made me. In August my edges show mud. I hold enough for a dry summer. Where am I?" Name the stop.
- "I am the last stop. A main under the street feeds me. What leaves me goes down the drain. Where am I?" Name the stop.
- "I float in cold air. What falls out of me lands on a ridge. Some of it soaks in, and the rest runs downhill. Where am I?" Name the stop.
- Two stops on this route hold water so the town can use it later. Which two stops are they?
- A riddle for either of those two stops could begin "I hold water." Write one detail from the cards that tells those two stops apart.
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 intake at the north end. The screen that keeps out sticks, leaves, and fish, and the divers who check twice a year, appear only on station 3.
- Answer: The water tower on Jessup Hill. Filling at night, drawing down by day, and standing above the roofs appear only on station 5.
- Answer: The filter room at the water plant. Sand, slow sinking, and the nightly backwash appear only on station 4.
- Answer: Marlbury Reservoir. The dam, the mud at the edges in August, and holding enough for a dry summer appear only on station 2.
- Answer: The kitchen tap at 12 Galewood Lane. Being last on the route, the main under the street, and the drain appear only on station 6.
- Answer: The cloud over Birchmoor Ridge. Floating in cold air, falling on the ridge, soaking in, and running downhill appear only on station 1.
- Answer: Marlbury Reservoir and the water tower on Jessup Hill. Both cards use the underlined word store.
- Answer: Accept any detail that separates them, such as the reservoir being a lake made by a dam that holds enough for a dry summer, while the tower stands on legs above the roofs, holds about one day of water, and creates the pressure that moves water through the pipes.
Differentiation
Support
Give these students a station card with the three strongest facts already circled and a riddle frame with three blank lines and the closing question supplied. Pair them with a group whose station is far apart on the route, such as the cloud and the tap, so the guessing work starts with stops that share few details. Allow items 1 through 6 to be answered with the station number instead of the full name.
Extension
Ask these students to write a second riddle for the same station that is true but much harder, using only facts a person would notice while standing there, and then to write two sentences explaining which detail they removed to make it harder and why that detail gave the stop away.
ELL supports
Pre-teach reservoir, intake, filter, tower, and main with a simple route drawing on the board and one labeled card per term. Provide each group with a first-person sentence frame: "I am ___. I ___. Where am I?" Allow the riddle to be drawn first and labeled with the card's underlined words before it is written as sentences.
Extensions
Have the class arrange the six index cards in route order along a wall, then write one connecting sentence between each pair of neighbors explaining how the water gets from one stop to the next. Post the finished strip beside a local map so students can name which real reservoir, tower, or plant would stand at each spot in their own town.