A leprechaun trap STEM worksheet for K-2 and grades 3-5
A trap project needs a place to record the thinking, not just a finished box. This free one-page worksheet comes in two versions: K-2 with picture prompts and sentence frames, and grades 3-5 with a hypothesis, a mechanism diagram and a test table. Print one per child, build the trap, and use the sheet to turn a craft into a design cycle the child can explain.
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One US Letter portrait page.
K–2 trap plan
A draw-first planning sheet for K–2: draw the trap, tick materials, explain the catch. Read the three questions aloud before children start drawing.
Classroom tools
One page per child, using the design, note variant and style above.
Up to 40 names. One page per student, personalised with the name above the design.
0 student pages.
Every single printable is free. Classroom sets are free during the launch preview, then use the paid seam when credits are enabled.
What is on the worksheet
Both versions have a box to draw the trap, a materials list, a prompt for how the trigger works, a test log and an improve box. The K-2 version uses three picture prompts: draw it, label the bait, circle what moves. The 3-5 version adds a hypothesis line, a diagram with arrows and a table for three tests with 'what happened' and 'what I changed'. The bottom of both pages has a name and date line.
K-2 version
Children draw the trap first, then list three materials with pictures or words. The sentence frame reads: 'The bait is ___. The trigger is ___. When ___ moves, the ___ falls.' They run one test with a coin and circle a face: worked, almost, did not work. The last box asks for one change: 'Next time I would ___.' An adult can scribe the words while the child draws.
3-5 version
Older children write a hypothesis before the build: 'I think the gate will drop when the string pulls the lever because the lever lifts the gate.' They draw the mechanism with arrows for the string, the lever and the gate. The test table has three rows for prediction, result and change. The improve box asks them to name one variable they changed and one they kept the same. That is the language a science rubric is looking for.
Run it in 45 minutes
Five minutes: show two traps and ask what moves. Ten minutes: draw the design and list materials. Twenty minutes: build the catch and the trigger, with adults on the cutting. Ten minutes: test three times and fill in the log. If the trap fails, the worksheet still counts; the log is the evidence. Collect the sheets before the traps go home so the writing does not get lost.
Run it in 90 minutes
Add a second build cycle. After the first test, give each child one index card and ask for one change. Rebuild, retest and compare the two rows. Finish with a two-minute share: each child shows the trap and reads the hypothesis and the result. The share is the presentation standard for most elementary STEM rubrics.
Rubric
Four rows, four points each. Design: the drawing labels the bait, trigger and catch. Mechanism: the trigger moves and the catch holds. Explanation: the child names the cause and effect. Improvement: the child changed one thing and recorded the result. A trap that fails and is improved can score full marks; a perfect parent-built trap with no log cannot. Share the rubric before the build so the child knows what to aim for.
Send-home version
The same worksheet works as a family project. Send it home with a note that says the child should do the drawing and the explanation, and an adult may help with cutting. Ask families to bring the trap and the sheet back on the due date. The sheet gives every family the same structure, whether they have a craft closet or only a recycling bin.
Questions
What is a leprechaun trap STEM project?
It is a design challenge: build a pretend trap with a bait, a trigger and a catch, then test it and improve it. The worksheet records the design, the mechanism and the test results.
What grade levels is the worksheet for?
There are two versions: K-2 with picture prompts and sentence frames, and grades 3-5 with a hypothesis, a mechanism diagram and a data table.
How long does the leprechaun trap STEM lesson take?
About 45 minutes for one build cycle, or 90 minutes if you add a second test and a short presentation. The worksheet is one page and prints on US Letter.
Does the worksheet need a real trap?
A physical trap makes the test log real, but the worksheet also works with a cardboard mock-up or a drawing. The important part is that the child predicts, tests and records a change.
Can the leprechaun trap worksheet be homework?
Yes. Send the one-page sheet home with a note that the child owns the design and the explanation. Adults can help with cutting and tying, but the ideas should be the child's.
What materials do students need for the build?
A shoebox, cereal box, paper cup, tissue box, egg carton, craft sticks or LEGO, plus tape, string, straws, card and a coin. Most classrooms already have these or can collect them.