Writing and work
Study & school
23 free tools for students and teachers: solve an expression or an inequality step by step, balance a chemical equation, draw a concept map or a timeline, make flashcards and multiple choice tests, work out the grade you need, cite your sources.
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Grade scale converter
Convert a grade between /10, /30, /100 scales.
Multiple choice test maker
Type the questions, mark the right answer with an asterisk: shuffled versions A, B, C, D to print and the answer key.
Flashcards for Anki and print
From a list of questions and answers: the Anki file, the Quizlet text and double-sided cards to print.
Solve an inequality
Solve the inequality and see the solution set, with the steps and the number line.
Squared and lined paper to print
Squares, lines, staves and isometric: pick the size and print, with no adverts.
Limiting reagent
Which reactant runs out first, how many grams of product come out and how much is left.
All tools, A to Z 23
Balance a chemical equation
Write the reaction and out come the smallest whole coefficients, with the atom count that proves it adds up.
Citations and bibliography
Fill in the source details and get the bibliography entry and the in-text citation in APA, MLA, Chicago and IEEE.
Concept map from an outline
Write an indented outline and out comes a tree diagram to download and print.
Flashcards for Anki and print
From a list of questions and answers: the Anki file, the Quizlet text and double-sided cards to print.
Grade I need
The grade needed on the next exam for your target average.
Grade scale converter
Convert a grade between /10, /30, /100 scales.
Greek alphabet
Greek letters: uppercase, lowercase, name and sound.
Limiting reagent
Which reactant runs out first, how many grams of product come out and how much is left.
Line through two points
The equation of the line through two points, with slope, distance, parallel, perpendicular and a graph.
Make a word search
Paste the words and out comes a word search to print as PDF, with the solution apart. Size and difficulty of your choice.
Molar mass
Molecular weight of any chemical formula
Multiple choice test maker
Type the questions, mark the right answer with an asterisk: shuffled versions A, B, C, D to print and the answer key.
Periodic table
Search chemical elements: symbol and atomic number.
SI prefixes
kilo, mega, milli, micro… with power of ten.
Solve an expression step by step
Type the expression as it is in the book: out come all the steps and the result as an exact fraction.
Solve an inequality
Solve the inequality and see the solution set, with the steps and the number line.
Squared and lined paper to print
Squares, lines, staves and isometric: pick the size and print, with no adverts.
Systems of equations
Solves a 2x2 or 3x3 linear system step by step, in exact fractions.
Test score to grade
Turn test points into a grade, with your own pass threshold and the full table to hand out.
Timeline from dates
Paste a list «1492 | Discovery of America», BC dates too, and get a timeline in SVG or PNG to print.
Triangle solver
From three values (SSS, SAS, ASA, AAS, SSA) get sides, angles, area, heights and a scale drawing, ambiguous case included.
Truth tables
With intermediate steps and equivalence
Weighted average
Average of grades/values with different weights or credits.