For teachers

A free 5‑minute math warm‑up.

One puzzle. The whole class.

Every day, a new number puzzle where every row and column has to be a true equation. Students place the digits; EquaCross finds the +, −, ×, ÷ and =.

Try today’s Easy puzzle Free to play · No sign-up needed

Download the classroom poster (PDF)

LevelEasy Time0:00 Checks0 Squares left4

42423111738321

About a minute

Watch how it works

Fill the empty squares so every row and column is correct math.

Play today’s puzzle

Why it works in class

Real arithmetic, in a puzzle they want to solve

Arithmetic that feels like a puzzle

Students test equations in their heads to make every line add up.

Instant feedback

Press Check and each placed tile turns green if it’s right or red if it needs to move.

Everyone gets the same puzzle

The whole class, or the whole school, solves the same board each day.

The daily Easy puzzle projected on a classroom board, with students raising their hands

How to use it

A bell ringer in four steps

1
Project today’s Easy
Put it on the board as students come in.
2
Ask where to start
Which square would they fill first, and why?
3
Place the digits together
Then press Check. Talk it through before each check: you get 5.
4
Want more?
Random puzzles have unlimited checks and come in three sizes.

The EquaCross classroom poster: how to play in three steps, with a QR code to today’s Easy puzzle

Put it on the wall

A printable poster that explains the game in seconds. Students scan the QR code to play today’s Easy.

US Letter A4

Levels

Four levels every day

Easy is the best fit for a class warm-up. Medium and Hard are there when students are ready. Expert is part of EquaCross Plus.

EEasy
MMedium
HHard
Expert

A daily puzzle board: number tiles with coral-outlined empty squares to fill

Make your own

Build puzzles for your class

With EquaCross Plus, build a puzzle and share its link. Students play it free, no account needed.

See EquaCross Plus

Questions

Good to know

Is it free?

Yes. The daily puzzle is always free.

Do students need an account?

No. Anyone can play without signing up.

Does it work on Chromebooks and tablets?

Yes. It runs in the web browser on Chromebooks, tablets, phones and computers, with nothing to install. If your school filters websites, ask IT to allow equacross.com.

Can I make my own puzzles?

Yes, with EquaCross Plus. Build a puzzle, share its link, and students play it free, no account needed. Tell us if it would help your classroom.

Using EquaCross with your students?

We’d love to hear how it goes and what would make it better for classrooms.

Email us Try today’s Easy