Education Tools

Read one word at a time with an eye anchor, in chunks or by sentence — and measure how many words per minute you actually read.

Find the numbers in order without moving your eyes from the center. A series of five grids gives you work efficiency, warm-up and stability.

AI builds a lesson presentation from your topic: slides, lesson plan, handout and a narrated video. PowerPoint export with speaker notes.

The periodic system, the solubility chart, the activity series of metals and a molar mass calculator on one page, with data from PubChem.

Type either box to convert. Switch modes for dates, a Roman clock, lessons, or a quiz. The chart stays visible.

Pick a level, fill in the answers, and tap Check. Earn coins, open chests, and unlock new worlds.

Adaptive algebra diagnostic for grades 5–11: shows which topics are mastered, where the gaps are, and what to study first.

Converts primary points to test scores using the official scales and helps you grade a mock exam by task and by the official FIPI criteria — the way an examiner does.

Grid, millimeter, dots, isometric, staves and handwriting guides as PDF with exact millimeters and a printer calibration.

Free typing trainer with adaptive lessons, code mode, finger heatmap and certificate. QWERTY, Dvorak, Colemak. 10 languages.

Interactive alphabet guide for 12 languages. Click any letter to hear its pronunciation. Learn mode + quiz mode.

Spell numbers and amounts with real grammar — seven languages, currency, ordinals, checks and batch mode.

Free adaptive logic puzzles for kids 5–12: patterns, odd-one-out, analogies, shapes, and deduction. Voice narration and a parent skill report.

Pick an animal and a source, then drag the slider to compare your vision with theirs.

Fill in a blank outline map on a phone or computer and print it

Drag any country across the map and see its real size: Mercator stops inflating it. Compare countries, states and regions by true area.

Solve equations, inequalities and systems step by step: discriminant, Vieta, domain, sign chart and a substitution check. Works from a photo.

Graph any function and get its zeros, extrema, asymptotes and intersections as numbers. Sliders for parameters, table of values, PNG and link.

Build a mind map from the keyboard, or paste a list and get a map. Share it as a link with no account; export PNG, PDF, Markdown, OPML.

Sudoku at 4×4, 6×6 and 9×9 with one verified solution and honest difficulty, plus word searches from your own list. Four to a page, PDF with answers.

Rings on its own on schedule — with a bell or a melody — and shows on screen how much time is left in the class.

Interactive multiplication chart, a times tables trainer that asks the hard facts more often, a mastery map and printable worksheets. In the browser.

Long division, multiplication, addition and subtraction step by step on grid paper: carries, remainders, repeating decimals. In your browser.

Add, subtract, multiply and divide fractions with steps: LCD, simplifying, mixed numbers, repeating decimals, GCF and LCM. In your browser.

Balance chemical equations with the oxidation-number method, find molar mass and percent composition, solve stoichiometry. In the browser.

Convert binary, octal, decimal and hex with full working: division ladder, expanded form, bit groups. Two's complement, IEEE 754. In the browser.

Truth table with a column for every step, DNF and CNF, Quine–McCluskey minimization, a Karnaugh map and a logic gate diagram. In the browser.

Triangles, quadrilaterals, circles, polygons and solids from any given data: scale drawing, every value, working with named theorems. In the browser.

Step-by-step derivatives, integrals and limits: each step names its rule and every answer is checked numerically. Runs in the browser.

Make a class schedule in two minutes: color-coded subjects, bell times, A/B weeks, 10 designs, vector PDF and a phone wallpaper. In your browser.