4th grade engineering activities

The stream tray rebuilt so 4th graders test two barriers against one storm, five more design challenges, a free printable, and every 4th 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 4th grade engineering Mission is at the end, by standard, free. (Tsunami sends a wave at three islands. The foil pan was the drizzle.)

On this page

What 4th grade engineering looks like

Fourth 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 Mission for each, plus fourth grade’s own energy design task. The 4th grade science activities page carries the investigations.

The 3 to 5 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). Fourth grade also has two design tasks written into its science: a device that converts energy from one form to another (4-PS3-4), and solutions that reduce the impact of natural Earth processes on people (4-ESS3-2).

You know the activity that usually stands in for all of that. A foil pan of sand on a slope, a pour of water, a few stones in front of a paper-cup house, and a cheer if the house stays dry. Dry or flooded, the class can’t tell whether the stones did it or the water just took another path. Give the team a second barrier and the same storm, and now it has something to recommend to the county.

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 stream tray that eats three of those days had better be engineering.

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

    “Stop the erosion” is a craft. “The county will pay for one kind of barrier, for the whole street” is a problem.

  2. 2. Apply, don't recall.

    A comparison that only counts if both barriers got the same storm. 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 pourer, one builder, two watchers. 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 tray (what is the barrier doing to the water, how far did the sand get, what is the one difference between your two) 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 barrier to recommend and what the evidence is, is the practice the standards name.

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

    If you can’t tell which student measured the sand and which one only poured, you can’t teach the design process. You can only grade the tray.

A dry tray flatters every barrier. The storm keeps score.

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 stream tray, rebuilt for 4th grade (4-ESS3-2)

A foil pan of sand on a slope, water poured from the top, and a barrier of stones, sticks, and cloth to protect a “house” at the bottom. It’s on nearly every 4th grade list because erosion and Earth’s hazards are both fourth grade standards (4-ESS2-1, 4-ESS3-2), and the way it usually runs is one pourer, one builder, two watchers, and a debrief that amounts to “did the house make it?” Here’s the version that hits all six.

Time
60 minutes with the reset and the mopping. The 45-minute cut: pre-build the trays with sand and slope the day before, give each team one solution to test against the control instead of two, and compare across teams at the debrief. The two-day version for a 23-minute block: the teach-first, the problem, and solution A on day one, with the Recorder’s row signed before the bell; solution B and the debrief on day two.
Groups
Fours. With 27 students, six groups of four and one of three, where the Surveyor also records.
Supplies for seven trays
7 foil roasting pans, a bag of play sand ($5), 7 paper cups, 14 measuring cups, stones, cloth scraps, toothpicks, books to prop the slope, and towels. About $15.
Standards
4-ESS3-2 (generate and compare multiple solutions to reduce the impacts of natural Earth processes on humans) with 3-5-ETS1-2 (compare solutions against the criteria and constraints). The control run is 4-ESS2-1 (evidence of the rate of erosion by water); the barriers assess the engineering.

  1. Teach first, 10 minutesApply

    Run a control tray with no barrier: pour 200 mL from the top and measure how far the sand reached toward the house. Ask what the water did and where the sand went. Name the idea: moving water carries sand, faster water carries more, and anything that slows the water drops the sand. Then name the three solutions on the tray: a wall (stones), a mat (cloth), and plants (toothpick “trees”).

  2. The problemStakes

    A family’s house (a paper cup) sits at the bottom of a hillside that erodes every storm, and the county will fund one kind of barrier for the whole neighborhood. The team tests two different solutions on the same slope with the same storm and recommends one, with evidence. Say the stakes out loud: a wrong recommendation means the whole street floods with mud.

  3. Four roles, one job eachAccountability

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

    • Builder

      The only hands on the barrier.

    • Rainmaker

      Pours the same 200 mL from the same height at the same speed every run, counting to ten.

    • Surveyor

      Measures how far the sand reached toward the house, in centimeters, and how much water pooled.

    • Recorder

      Sketches each barrier and writes both measurements.

  4. You lead the thinkingTeacher leads

    Three questions, asked at the tray: What is your barrier doing to the water’s speed? How far did the sand get compared with the control? What is the one difference between your two solutions? The hardest part is staying quiet when the water finds the gap at the end of the wall. Let it.

  5. Two rounds, so the comparison has to be fairApply

    Solution A: build, storm, measure. Reset the sand. Solution B: build, storm, measure. The comparison only counts if both storms match, the same 200 mL from the same height on the same count, which is why the Rainmaker has one job and keeps it.

  6. The debrief, 10 minutesDebrief

    A class chart of every team’s A and B distances. Which kind of barrier protected the house best across the room, and did any team get the opposite result? Why? What would you tell the county, and what is your evidence? Who in your group noticed the water going around the barrier before the sand did? The second question is the standard: comparing solutions, with evidence, out loud.

  7. See who did whatSee who did what

    The observation sheet, four behaviors per student: proposed a solution with a reason, measured accurately, disagreed with a reason, changed their mind with a reason. You’ll catch about half the room in one period. The storm itself is a 10-second event, so tally during the builds, while the Builders build and everyone else argues.

(A full flood season for seven neighborhoods runs about $15 in sand and foil. The towels do the rest.)

Prop every slope on the same two books, or the county gets seven different hills.

The stream tray erosion challenge, free

Emailed now, ready to copy: the teacher page, four role cards, one team page (both barrier sketches and the three storms, the control first), the county recommendation, and the four-behavior tally.

It’s on its way.

Check your inbox for the stream tray erosion challenge.

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

Five more 4th grade design challenges, by standard

Five more on every 4th grade list: what each one is, how it usually runs, and what it needs to be engineering, in the order the standards run.

Test, protect, convert energy

2. The parachute drop (3-5-ETS1-3)

Needs plastic bags, string, washers, a stopwatch. Groups of four.

Teams cut a canopy from a plastic bag, tie on string and a washer, and time how slowly it falls. Every drop can be timed, so a fair test is right there for the taking. As usually run, though, it’s a slowest-drop contest, the canopy carries nothing that matters, and teams change several things at once between drops.

The fix

  1. Give the canopy a payload: a weather sensor that breaks if it lands too fast.
  2. Use four roles: a Builder, a Dropper who releases from the same mark every time, a Timer, and a Recorder.
  3. Run three drops a round, and change only one variable between rounds, like the canopy size.

See it fixed on the 4th grade STEM page →

3. Earthquake structures on gelatin (4-ESS3-2)

Needs toothpicks, a tray of gelatin.

Students build a structure from toothpicks, set it on a tray of gelatin, and shake the tray to see whether it stands. The stakes are real: a building that falls in an earthquake is exactly the hazard this grade studies. As usually run, though, it’s a demo where the teacher shakes and the class watches, with no record of who built what or how each structure failed.

The fix

  1. Write the criteria first, such as the structure stands through a set number of shakes.
  2. Give each student a role, with one Shake Operator who gives every structure the same shake.
  3. Keep a shake log of where each structure moved first and whether it survived.

See the shake table rebuilt for 6th grade →

4. The solar oven (4-PS3-4)

Needs a foil-lined box, a s'more, the sun.

Students line a box with foil, set a s’more inside, and put it in the sun to see if it melts. It already has a real problem and a design that has to work, and it lands right on the energy unit. As usually run, though, it’s a treat day: every team builds about the same oven, nobody measures anything, and the s’more is gone before anyone asks why it melted.

The fix

  1. Give each team one variable to change, like the angle of the foil flap or the color of the lining.
  2. Put a thermometer in every oven, and log the temperature at the same times.
  3. Line up every team’s log and ask which change made the biggest difference.

No page for this one; one variable per team and the thermometer log are the fix.

5. The working flashlight (4-PS3-4)

Needs an LED, wire, a casing, a switch. Usually a kit.

Students wire an LED into a casing with a switch, usually from a kit. The circuit has to work, so the energy idea gets used. As usually run, though, one student ends up doing the wiring, and when the light comes on, nobody can say who figured out what.

The fix

  1. Give each student one part to own, like the switch or the wiring, and have them sign for it.
  2. Before the light goes on, each student explains how their part moves the energy along.

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

6. The windmill from a tube (4-PS3-4)

Needs a cardboard tube, blades, a fan.

Students tape blades onto a cardboard tube and watch it spin in front of a fan. Kids love watching it go. As usually run, though, it’s a craft: nothing measures how well it turns, no energy idea goes into the blades, and no one can say who did what.

The fix

  1. Put a tape flag on one blade, so the team can count the turns in 10 seconds.
  2. Give each student one blade to own and sign for.
  3. After each change, the blade’s owner says what it did to the count.

See it fixed on the 4th grade STEM page →

  • 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 stream tray’s own two standards (4-ESS3-2 and 3-5-ETS1-2): your class becomes the crew, the scenario is built from the hazards unit you just taught, and the only way through is using it together. Run the tray first, then the Mission, and the unit has a day two.

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

    Tsunami: the hazards unit, as a Mission

    Tsunami · 4th grade · About 43 minutes · One device per student, plus your projector · Free with a teacher account

    A teacher in a black cardigan leans over a table of students at their Chromebooks, while two boys at the end of the table look across at their teammates.
    A teacher bent over one table, and a team of students at its Chromebooks.

    A deep-ocean earthquake has set off a massive tsunami on Viper I, and three populated islands are in its path. The crew has to design an improvement to each island’s own defense system, based on what makes that city and that island different. 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 makes this island different and which design fits it.

    It’s built to the tray’s two standards (4-ESS3-2 and 3-5-ETS1-2), with 3-5-ETS1-1 alongside, and the vocabulary is the unit’s: tsunami, solution, evidence, criteria, design. Run the stream tray first, and tell the class why: each island needs its own defense, and they’ll need to know how to compare two barriers before they pick one. The lesson prepares them. The Mission is what they’re preparing for.

    “Unlike other tech programs in the district that often have students working in isolation or in pairs, Mission.io emphasizes true collaboration.”

    Lorilee Johnson, District specialist, Alpine School District, 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 43 minutes, Tsunami runs 20 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 hazards 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.

    4th grade engineering Missions by NGSS standard

    Tsunami is one. There are 5 engineering Missions at 4th grade, numbered 7 to 11 below: three built to the 3 to 5 engineering standards, and two career Missions that start at 4th grade with no NGSS code. Fourth grade’s energy design task, 4-PS3-4, has no Mission, and three challenges on this page teach it. Every lesson finally has somewhere to go. Each code links to its standard on nextgenscience.org.

    Engineering design (3-5-ETS1)

    One Mission or more 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 4th grade, by NGSS code, with the grade's energy design task.
    NumberThe standardMissionMinutes
    74-ESS3-2, 3-5-ETS1-1, 3-5-ETS1-2 Define the problem and compare solutions: improve three islands’ defenses against one tsunami (4th grade). On this page: 1. The stream tray and 3. The gelatin structures.Tsunami43
    83-ESS3-1, 4-ESS3-2, 3-5-ETS1-1, 3-5-ETS1-2, MS-ETS1-2 Design wave reduction structures that protect an evacuated city from a tsunami (grades 3 to 5). On this page: 1. The stream tray and 3. The gelatin structures.Engineering Solutions17
    93-5-ETS1-3 Fair tests and failure points: improve a damaged reactor’s design from the data (grades 3 to 6). On this page: 2. The parachute drop.Reactor Revamp45
    4-PS3-4 Fourth grade’s own design task: design, test, and refine a device that converts energy from one form to anotherOn this page: 4. The solar oven, 5. The flashlight, and 6. The windmill

    Engineering careers, from 4th grade up

    Two Missions from the career set that start at 4th grade and keep running through 12th. Neither lists an NGSS code; each one is a design problem with real constraints.

    Engineering career Missions that run at 4th 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; made with US Synthetic)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 4th grade science activities page maps the grade’s science and engineering Missions by NGSS standard, these three design Missions among them; the 4th grade STEM activities page rebuilds the parachute drop and fixes the windmill; and the 4th grade math activities page maps every 4th grade math standard.

Questions 4th grade engineering teachers ask

My 4th grade science block is 23 minutes. Can the stream tray fit?

Not in one sitting. Use the 45-minute cut on a longer day, or the two-day split: solution A on day one, solution B and the debrief on day two. Of the five Missions, one fits inside your block: Engineering Solutions, at 17 minutes. The rest run past it: Unstoppable Force by 11 minutes, Tsunami by 20, and Reactor Revamp and Mission to Mars by 22.

Which 4th grade engineering standards does this page map?

The three 3 to 5 design standards, 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; the second and third have challenges here too. It also maps fourth grade’s own energy design task, 4-PS3-4, which has three challenges on this page and no Mission.

Is the 4th grade stream tray engineering, or just the erosion lesson?

Both, in order. The control run, sand washing down a slope with no barrier, is the erosion standard (4-ESS2-1). Testing two barriers against the same storm and recommending one is 4-ESS3-2 and 3-5-ETS1-2: generate and compare solutions. The second barrier is what makes it engineering.

How messy is a 4th grade stream tray, and what does it cost?

Wet. Towels are on the supply list for a reason, and the real length, 60 minutes, includes the reset and the mopping. Pre-building the trays the day before saves the most time. Seven trays run about $15 in foil pans and play sand. The Missions need one device per student and your projector, and they’re free with a teacher account.

Does this 4th grade page line up with my state's standards, not just NGSS?

Tsunami, the Mission on the tray’s standards, maps to twelve state science sets, Florida, Colorado, Arizona, and New York among them. Every Mission page lists its NGSS codes and its state sets.

Every paper-cup house deserves a tested barrier

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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