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Classroom activity Grade 5 Math

Creek Cleanup Conversion Relay: A Grade 5 Measurement Station Game

A grade 5 movement relay where teams convert cups to pints, pints to quarts, and quarts to gallons to log a fictional creek cleanup's debris total.

Objectives

  1. Students will convert cups to pints, pints to quarts, and quarts to gallons using standard liquid-measure equivalents.
  2. Students will apply the same conversion rate to a fixed starting amount across three sequential stations.
  3. Students will explain why every team reaches the same final total when starting from equal amounts.

Vocabulary

Key words: cup, pint, quart, gallon, conversion

Teacher overview

This is a station relay for a fictional class cleanup day at Pinewood Creek, played by 5 teams of 4 to 5 students. Each team represents a cleanup crew that collected 16 cups' worth of creek-side debris, tracked on a recording card rather than measured in real cups, and must correctly convert that amount through three unit-conversion stations, cups to pints, pints to quarts, and quarts to gallons, before logging their final total on the class's collection log.

Activity Directions

  1. Before class, set up three stations around the room labeled "Station 1: Cups to Pints," "Station 2: Pints to Quarts," and "Station 3: Quarts to Gallons," each with a sign showing the needed conversion rate (2 cups = 1 pint; 2 pints = 1 quart; 4 quarts = 1 gallon).
  2. Divide the class into 5 teams of 4 to 5 students. Give each team a recording card that starts with "16 cups collected" already written at the top.
  3. Explain the rule: at each station, the team must correctly compute the conversion for their current amount and write the new amount on their recording card before a station volunteer initials the card and lets them move to the next station.
  4. Send all 5 teams to Station 1 at the same time. Each team converts 16 cups to pints (dividing by 2), writes the result, and gets it checked before advancing.
  5. Teams move to Station 2 and convert their pint total to quarts (dividing by 2 again), writing the result and getting it checked.
  6. Teams move to Station 3 and convert their quart total to gallons (dividing by 4), writing the final result and getting it checked.
  7. The activity ends when every team has completed all three stations, or after 25 minutes, whichever comes first. Teams that finish early report their final gallon total to the class collection log on the board.
  8. Gather the class for the debrief once every team has logged a result: ask why every team's final number came out the same even though they moved through the stations at a different pace.
Creek Cleanup Conversion Relay: A Grade 5 Measurement Station Game — Grade 5 Math
Name: ____________________________ Date: ______________

Student Handout

Cleanup Crew Recording Card. Write your crew name at the top of this card. Your crew collected 16 cups of debris along Pinewood Creek. Answer each numbered item at its station, showing your work, and have a station volunteer initial the card before you move to the next station.

  1. Station 1, Cups to Pints. Your crew collected 16 cups of debris. Using the rate 2 cups = 1 pint, how many pints did your crew collect?
  2. Station 2, Pints to Quarts. Take the pint total you found at Station 1. Using the rate 2 pints = 1 quart, how many quarts is that?
  3. Station 3, Quarts to Gallons. Take the quart total you found at Station 2. Using the rate 4 quarts = 1 gallon, how many gallons is that?
  4. Debrief. Every crew started with the same 16 cups. Explain why every crew that computed correctly logged the same final number of gallons, no matter how quickly it moved through the stations.
  5. Class collection log. All 5 crews each collected 16 cups and converted it through the same three stations. Add the gallon totals for all 5 crews. How many gallons did the whole class collect on cleanup day?

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

Answer Key
  1. Answer: 8 pints.
    16 cups divided by 2 cups per pint equals 8 pints.
  2. Answer: 4 quarts.
    8 pints divided by 2 pints per quart equals 4 quarts.
  3. Answer: 1 gal.
    4 quarts divided by 4 quarts per gallon equals 1 gallon.
  4. Debrief question: "Why did every team end up with the same final answer of 1 gallon?" Answer: Every team started with the same 16 cups, and the conversion rates at each station were fixed, so any team that computed correctly had to reach the same final amount no matter how quickly they moved through the stations.
  5. Answer: 5 gal.
    If all 5 teams each convert their 16 cups to 1 gallon, the class collection log shows a combined total of 5 gallons collected for the cleanup day.

Differentiation

Support (below grade level)

Post each station's conversion rate as a simple arrow rule ("cups divide by 2 to get pints") directly on the station sign, and allow struggling teams to use a printed multiplication and division chart.

Extension (above grade level)

Ask advanced teams, once they finish all three stations, to work backward and figure out how many cups a team would need to collect to end up with exactly 2 gallons after the same three conversions.

ELL supports

Use picture icons of a cup, a pint container, a quart container, and a gallon jug at each station sign alongside the words. Pair each conversion with a simple gesture (two fingers together for "divide by 2," four fingers for "divide by 4") that the whole class performs together before computing.