Double-sided formula cards: plane geometry, solids and combinatorics. A drawing with colour-coded symbols and formulas on the front, a legend explaining every symbol on the back.
Each card is one topic and two sides. You read the front from the drawing: a figure with letters in coloured circles, and below it the formulas for perimeter, area or volume. The circle next to a letter has the same colour in the drawing and in the formula, so you never have to search the text for what h was.
The back is a legend: every symbol written out in a full sentence, plus the value of π, nothing more. Solids come with a net unfolded next to them, trigonometry with a table of values, and combinatorics with a worked example using little figures.
At a glance:
One card, two sides. The front to calculate, the back to know what every letter means.
The name of the figure, solid or theorem at the top of the card, always in the same place, so you can flick through the set with your thumb.
Trigonometry, plane geometry with polygons, solid geometry, and probability and statistics. From the right triangle to the truncated cone and variations with repetition.
Every symbol has its own colour: one side light blue, the other orange, the height green, the angle pink. A formula stops being a string of letters, because you can see which letter is which segment.
Cover the formulas and rebuild them from the drawing alone. Sort the cards into plane figures and solids. Take one in your backpack the day before a test.
25 double-sided A6 cards covering geometry, solids and combinatorics, in a box that fits in a backpack.
Double-sided handwriting practice cards — from A for Antelope to Ż for Giraffe. Each letter has its own animal ambassador! For children aged 3–6.
A drawing on one side, a word on the other: in Polish, English, German, French, Spanish or Italian. An article next to the word and a difficulty level at the bottom of the card.
