Biology  by Bradford
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Free · for your class

Question on one edge. Answer on the next.

The classic Tarsia triangle jigsaw. Tick the topics your class has covered, or type your own pairs, and download a drag-and-drop puzzle (a correct piece snaps in and pulses green) or a cut-out sheet with an answer key. Every question meets its answer on a shared edge.

Build one for your topic

Pairs from the site’s checked question bank, or your own in any subject. Free.

Ready-made

Four packs of nine pairs for the medium triangle. Load one, then change any pair.
Step 01Type the question and answer pairsType them in, or drop a CSV on the table.
Drag a CSV onto the table, or pick a file. Questions in one column, answers in the next; a header row is optional. Up to 42 characters each. Template
0 / 3 pairs Tab between cells. Empty rows are ignored on export.
# Question Answer
01
02
03
Step 02Puzzle settings
Pick a triangle, rhombus, or hexagon. Each shape is built from small triangles and one Q/A pair sits on every shared edge. Only sizes that stay legible when printed are offered (up to 18 pairs). Keep each question or answer under 42 characters and it will auto-fit onto the edge.
Printed at the top of the puzzle.
Print in
Black and white prints the pieces with no fill and every word in black, for a school printer. The printed sheet has the same switch.
Bookmark or send to a colleague to come back to these exact pairs.
Live preview · solved shape
Type your first pair to see the shape take form.
Step 03Download & share
Two ways to run it

Interactive: triangles start scrambled in a tray; students drag each into the matching outline. Correct drops snap in and pulse green, wrong ones shake. Mouse and touch both work, no login, no internet needed once downloaded.

Printable: a cut-out sheet of scrambled triangles to arrange on paper, plus an answer-key page. Open it and press Print.