5th grade engineering activities

The water filter rebuilt so 5th graders compare designs against real criteria, five more design challenges, a free printable, and every 5th grade engineering Mission by standard.

  • By Skyler Carr, co-founder and CEO, Mission.io
  • Last updated

Who we are. Mission.io makes Missions: teacher-led, whole-class simulations where students use what they’re learning to work through a real scenario together.

Everything on this page works without us. Every 5th grade engineering Mission is at the end, by standard, free. (Reactor Revamp hands your class a broken fusion reactor and a sky full of asteroids. The filter is the easy day.)

On this page

What 5th grade engineering looks like

Fifth grade engineering activities are design challenges where the class defines a problem, builds more than one way to solve it, and tests which one meets the criteria, with each student answerable for a piece. This page covers the 3 to 5 engineering design standards, 3-5-ETS1-1 to 3-5-ETS1-3, with a challenge and a Mission for each. The 5th grade science activities page carries the investigations.

Fifth grade is the last year of the 3 to 5 band, and the band asks for three moves. Define a design problem with criteria for success and constraints on materials, time, or cost (3-5-ETS1-1). Generate and compare more than one solution against those criteria (3-5-ETS1-2). Then run fair tests, with the variables controlled and the failure points found, to decide what to improve (3-5-ETS1-3). Fifth grade has no engineering standard of its own, so the problems come from the science: Earth’s water (5-ESS2-2) and protecting it (5-ESS3-1).

You know the activity that usually stands in for all of that. A bottle, some gravel, a cup of mud, and a cheer for whoever’s water looks clearest. That’s a craft with a winner. Engineering starts when the class has to say what “clear enough” means before anyone pours.

Six things that turn a build into engineering

The standards set the bar on purpose: NGSS raised engineering design “to the same level as scientific inquiry,” and at grades 3 to 5 that means defining the problem with criteria and constraints, researching more than one solution, and revising (NGSS Appendix I). The catch is the clock. Engineering is written into the science standards, so it shares science’s time, and grades 3 to 5 average about 23 minutes a day on science (2018 NSSME+). A build that eats three of those days had better be engineering.

  1. 1. A real problem with stakes the class can feel.

    “Make the water clearer” is a craft. “The clinic needs 200 mL of clear water in three minutes” is a problem.

  2. 2. Apply, don't recall.

    A second round that only works with the data from the first. If the build can be finished without testing anything, it isn’t engineering.

  3. 3. Group goals with individual accountability.

    The one most build challenges miss: one kid holding the bottle, three kids holding opinions. When the group shared a goal and each student answered for a part, 84% of studies found a positive effect; without both, 17% (Slavin, 1991).

  4. 4. The teacher leads the thinking.

    The design-process poster doesn’t ask questions. You do. Three at the bottle (why that layer, what are you trading, what did the test tell you) beat a worksheet of twenty at the desk.

  5. 5. A debrief where the class argues it out.

    The build is the setup. The argument afterward, about which design met the criteria and why, is the practice the standards name.

  6. 6. A way to see who did what.

    If you can’t tell which student chose the layer order and which one only poured, you can’t teach the design process. You can only hope for it.

A build makes a thing. Engineering makes a case for it.

The printable at the end of the next section puts all six on the tray, with every card and log the activity uses, ready to copy. Get the sheet →

The water filter, rebuilt for 5th grade (3-5-ETS1-2)

Gravel, sand, cotton, and a coffee filter layered in a cut bottle, then a cup of dirty water poured through and judged on how clear it comes out. It’s on nearly every 5th grade list because 5th grade is the water year, and the way it usually runs is one pourer, layers copied off a diagram, and a debrief that amounts to “whose is clearest?” Here’s the version that hits all six.

Time
60 minutes with the mess. The 45-minute cut: pre-cut the bottles, pre-mix the dirty water, and run round two on one change only. The two-day version for a 23-minute block: the teach-first and the first build and test on day one, with the test row signed before the bell; the one change, the retest, and the debrief on day two.
Groups
Fours. With 28 students, seven groups of four exactly.
Supplies for seven filters
7 cut 2-liter bottles, a bag of aquarium gravel ($4), play sand ($5), cotton balls, coffee filters, cheesecloth, a bucket of dirty water (soil, a spoon of oil, leaf bits), 14 clear cups, and the five-shade clarity card printed on the sheet. About $15.
Standards
3-5-ETS1-2 (compare solutions against the criteria and constraints) with 3-5-ETS1-3 (fair tests and failure points). The water is the context, from 5-ESS3-1 (how communities use science to protect Earth’s resources); the build assesses the engineering.

  1. Teach first, 10 minutesApply

    Pour muddy water through one coffee filter and, beside it, through a cup of gravel, and ask what each one caught. Name the idea: a filter catches what’s bigger than its holes, and small holes catch more and run slower. Then name the tradeoff out loud: clear or fast, and the team will have to choose.

  2. The problemStakes

    A village’s well is cloudy after a flood, and the clinic needs 200 mL of clear water in under 3 minutes to mix medicine. The team writes its criteria: the output at least two shades clearer than the input on the clarity card, and all 200 mL through in under 3 minutes. The constraints: the materials on the tray, the bottle, and 12 minutes to build.

  3. Four roles, one job eachAccountability

    On the sheet, and everyone signs their role’s box. Builder and Pourer swap between rounds.

    • Builder

      The only hands on the bottle and the layers.

    • Layer Lead

      Chooses the order of the layers, and says why before each one goes in.

    • Pourer and Timer

      Pours 200 mL at the same speed every test and times it to the second.

    • Recorder

      Clarity before and after, the time, and a sketch of the layer order.

  4. You lead the thinkingTeacher leads

    Three questions, asked at the bottle: Why that layer on top? What are you trading, clear or fast? What did the time tell you that the color didn’t? The hardest part is not telling them which layer goes first. Let them find out.

  5. Two rounds, so the test has to be usedApply

    Build and test, then 3 minutes to change one layer, then retest with fresh dirty water. The second round only works with the data from the first: a team that didn’t time round one can’t tell whether its change made the filter better or just slower.

  6. The debrief, 10 minutesDebrief

    Every team’s clarity and time on the board. Which layer orders came out clear and fast, and which came out clear and slow? What does the fastest clear filter tell the village about which material matters most? If you combined two teams’ designs, what would you build? Who in your group argued for a layer the team didn’t use, and would it have helped? The third question is the standard: comparing solutions against the criteria, out loud.

  7. See who did whatSee who did what

    The observation sheet, four behaviors per student: proposed a layer with a reason, measured or timed accurately, disagreed with a reason, changed their mind with a reason. Tally while you walk the seven bottles; you’ll catch about half the room in one period. The pour is a two-minute wait every team gets, and that wait is your walk.

(The clearest cup will probably be the slowest. Good. That’s the debrief.)

Nobody drinks the water, even the clearest cup. The sheet says so twice, on the clarity card and on the test log.

The village water filter, free

Emailed now, ready to copy: the teacher page, four role cards, the clarity card, one team page (the criteria and constraints, the layer sketches, and both tests), the village recommendation, and the four-behavior tally.

It’s on its way.

Check your inbox for the village water filter.

Email me the sheet. It comes as a PDF, ready to print. Unsubscribe anytime.

Five more 5th grade design challenges, by standard

Five more on every 5th grade list: what each one is, how it usually runs, and what it needs to be engineering, in the order the standards run.

Define, compare, test

2. The egg drop (3-5-ETS1-1)

Needs eggs, a drop height, a materials tray. Groups of four.

Teams build a container from a tray of materials, and the egg goes off a ledge to see if it survives. It’s the build challenge fifth graders ask for by name. As usually run, though, it’s a one-shot with cheers: the egg survives or it doesn’t, and nobody learns why one made it.

The fix

  1. Give the team four roles, and write the criteria in the team’s own words before anyone builds.
  2. Do a practice drop with a ping-pong ball first, and the design has to change because of what it showed.
  3. Then drop the one real egg.

See the egg drop rebuilt for 5th grade →

3. The cardboard vending machine (3-5-ETS1-2)

Needs cardboard, tape, small items to dispense. Teams. A multi-day project.

Teams build a cardboard machine that drops one item at a time, usually over several days. It already has a real problem and a design that has to work, and the finished machines are impressive. As usually run, though, a few students build the mechanisms while the rest decorate, and the build crowds out any questions about how it works.

The fix

  1. Give each student one mechanism to build, like the gate that lets one item out or the chute it falls down.
  2. While teams build, stop at each mechanism and ask its owner a question, like what keeps a second item from falling.
  3. Before the machine goes together, each student explains their mechanism, out loud or in writing.

No page for this one; one mechanism per student, explained, is the fix.

4. The self-powered boat (3-5-ETS1-3)

Needs a rubber band paddle, hull materials, a tub of water. Groups of four.

Teams build a hull, wind a rubber band paddle, and send the boat across a tub of water. Trying different hull and paddle shapes puts the design to work. As usually run, though, each boat goes once or twice, nobody times it, and the team can’t say whether a change made it faster.

The fix

  1. Run every design three times before anything changes.
  2. Give the team a Timer, who times every run, and a Measurer, who measures how far the boat went.
  3. Compare the three runs before and after each change, so the team decides from the numbers.

No page for this one; the three runs, the Timer, and the Measurer are the fix.

5. The insulated container (3-5-ETS1-3)

Needs ice cubes, cups, insulating materials, a scale. Teams. An overnight test.

Teams wrap cups of ice in different materials and leave them overnight to see which keeps the ice longest. The test is real, and it puts what the class knows about matter to work. As usually run, though, every team tries a little of everything, and in the morning nobody can say whose cup did what, or by how much.

The fix

  1. Give each team one material to test, so the class covers all of them together.
  2. Make one student the Weigher, who weighs the meltwater on the scale in the morning.
  3. Put every team’s number on one class chart, and ask which material won and why.

No page for this one; one material per team and the Weigher are the fix.

6. The craft stick bridge, load tested (3-5-ETS1-3)

Needs craft sticks, glue, coins for the load. Teams.

Teams glue craft sticks into a bridge and stack coins on it until it fails. The coin count is a real number, and the crash is half the fun. As usually run, though, it’s a strength contest with no reason for the bridge to exist, a couple of students do the gluing, and no one can say who built what.

The fix

  1. Give the bridge a job, like carrying a load across a gap, with a coin count it has to hold.
  2. Give each student a section to build and sign, so every joint has an owner.
  3. When it fails, the owner of the section that broke first says why, and the class argues it out.

No page for this one; the three misses are the fix.

  • Our part · We make Missions

    Then the unit has somewhere to go

    Plenty of teachers rebuild these by hand every unit, and it works. A Mission is a teacher-led, whole-class simulation built to the filter’s second standard (3-5-ETS1-3): your class becomes the crew, the scenario is built from the design unit you just taught, and the only way through is using it together. Run the filter first, then the Mission, and the unit has a day two.

    You're at the helm, not on the hook.

    Reactor Revamp: the design unit, as a Mission

    Reactor Revamp · Grades 3 to 6 · About 45 minutes · One device per student, plus your projector · Free with a teacher account

    A teacher leans in to an upper-elementary team at their Chromebooks, and two students look up at her, grinning.
    A teacher leaning in to one team at its Chromebooks, mid-Mission.

    An unexpected EMP has damaged the fusion reactor that powers Koré’s shield, and asteroids are on the way. The crew has to design and build an improved reactor from a variety of materials, one that puts out the best power it can. The original is unstable, and the fix is in modifying its design. The story plays on the projector. The work happens at seven stations (Command, Engineering, Medical, Security, Science, I.T., Operations) and in the arguments between them.

    Every student is assigned to a team, and each team’s work is themed to it, from its own information and challenge to the same problem the rest of the crew is solving. The team gives a student a role in the story and people to lean on while you move between teams. You’re at the helm, asking what the last test told them and which variable they changed.

    It’s built to the filter’s second standard (3-5-ETS1-3), with reading and speaking codes alongside (RI.5.1, RI.5.7, SL.5.1), and the vocabulary is the unit’s: variable, prototype, model, improvement, failure point. Run the filter first, and tell the class why: when the reactor goes unstable, they’ll need to know how a fair test finds the failure point. The lesson prepares them. The Mission is what they’re preparing for.

    “This is the most fun they have all week, and they’re learning the whole time. I’m not going back.”

    Lisa Free, Mission Lab specialist, Cook Elementary School, UT

    Will it work in my room?

    Students join with a class code: no student accounts, no student email, no passwords. Chromebooks, laptops, or tablets, plus your projector. Free for teachers, no credit card. Student data is covered by COPPA and FERPA, and we signed the Student Privacy Pledge. At about 45 minutes, Reactor Revamp runs 22 minutes past the average 3 to 5 science block. Give it a full period, or run it on cart day.

    START FREE →

    Communication first, then the design unit's two

    What the report shows

    A Mission.io class report: the class score in each of six skills, from knowledge and application to collaboration, critical thinking, and resilience, with the class chart across the year below.
    A class report from a real Mission: the class score in each of six skills, then each skill across the year.

    Every Mission produces a report for every student, built from what that student did across the whole Mission, on the skills the Mission captured. The six it can capture are Knowledge, Application, Initiative, Collaboration, Critical Thinking, and Resilience. The first two are what a test already sees. The other four are the human skills every school promises. The test shows what they know. The report shows the rest. SEE THE EVIDENCE →

    You taught it. Now find out who can use it.

    Who's behind it

    Mission.io is a research and design organization with one job: make collaborative, active learning something a teacher can run every unit instead of once a semester, and put a report in your hands when it’s over. Over a million students have run a Mission. The research behind them is funded by the National Science Foundation and the U.S. Department of Education’s Institute of Education Sciences, and Mission.io meets ESSA Level II standards, as validated by Instructure.

    5th grade engineering Missions by NGSS standard

    Reactor Revamp is one. There are 5 engineering Missions at 5th grade, numbered 7 to 11 below: three built to the 3 to 5 engineering standards, and two career Missions that run from 4th grade up with no NGSS code. Every lesson finally has somewhere to go. Each code links to its standard on nextgenscience.org.

    Engineering design (3-5-ETS1)

    One Mission for each of the band’s three moves. Engineering Solutions, at 17 minutes, is the one that fits inside a 23-minute block.

    Engineering design Missions for 5th grade, by NGSS code.
    NumberThe standardMissionMinutes
    73-5-ETS1-1, 3-5-ETS1-2, MS-ETS1-2, MS-ETS1-3 Define a problem with criteria and constraints; compare solutions. Three islands, three defense systems to improve (grades 5 to 8). On this page: 1. The water filter, 2. The egg drop, and 3. The vending machine.Tsunami33
    83-5-ETS1-3 Fair tests and failure points: improve a prototype from the data. On this page: 1. The water filter, 4. The boat, 5. The insulated container, and 6. The bridge.Reactor Revamp45
    94-ESS3-2, 3-ESS3-1, 3-5-ETS1-1, 3-5-ETS1-2, MS-ETS1-2 Compare solutions that reduce the damage from a natural hazard (grades 3 to 5). On this page: 1. The water filter, 2. The egg drop, and 3. The vending machine.Engineering Solutions17

    Engineering careers, from 4th grade up

    Two Missions from the career set that run at 5th grade and keep running through 12th. Neither lists an NGSS code; both are design problems with real constraints.

    Engineering career Missions that run at 5th grade, with no NGSS code listed.
    NumberThe standardMissionMinutes
    10Tunnel through an asteroid with different drill bits before it hits a planet (grades 4 to 12; no NGSS code listed)Unstoppable Force34
    11Pick a route, a landing point, and a first shelter on Mars (grades 4 to 12; no NGSS code listed; made with Hill Air Force Base)Mission to Mars45
    START FREEMISSION BRIEF →

    Free teacher account, no card. Start with the Communication Mission, marked Start here in your library, then the Mission for your unit, each after its 5-minute Teacher Preview.

    Also at this grade

    The 5th grade science activities page maps every 5th grade science standard, these three engineering Missions among them; the 5th grade STEM activities page rebuilds the egg drop; and the 5th grade math activities page maps every 5th grade math standard.

Questions 5th grade engineering teachers ask

My 5th grade science block is 23 minutes. Where does the water filter fit?

Across two days, or in one longer period. The filter needs the 45-minute cut or the two-day split: the first build and test on day one, the change and the debrief on day two. Of the five Missions, one fits inside your block: Engineering Solutions, at 17 minutes. Tsunami runs 10 minutes past it, and the other three run 11 to 22 minutes past.

Which 5th grade engineering standards does this page map?

The band’s three: 3-5-ETS1-1 (define the problem), 3-5-ETS1-2 (compare solutions), and 3-5-ETS1-3 (fair tests and failure points), each with a Mission and a challenge on this page. Fifth grade has no engineering standard of its own, since the band runs 3rd to 5th, so the water filter takes its problem from 5-ESS3-1.

How do I grade a 5th grade water filter fairly?

Grade the criteria and the behaviors, not the clearest cup. Did the team’s design meet the criteria it wrote, and can the Recorder show it with two test rows? That’s one grade. The four-behavior tally over two or three challenges is the other. A team with murky water and a sharp recommendation to the village can outscore the team that got lucky.

What does the 5th grade filter cost to run?

About $15 for seven filters in gravel, sand, and coffee filters, plus 2-liter bottles and cups collected from home. No makerspace needed. The Missions need one device per student and your projector, and they’re free with a teacher account.

Do these 5th grade Missions line up with my state's standards, not just NGSS?

Reactor Revamp maps to twelve state science sets, Pennsylvania and West Virginia among them, and Tsunami maps to twelve as well, Mississippi’s included. Every Mission page lists its NGSS codes and its state sets.

A filter the clinic could actually use

Day one, a design challenge by hand with the sheet. Day two, a Mission from the tables, after a 5-minute Teacher Preview. Both free.

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