Formatio.Forge

Turn “this makes no sense” into number sense

Place-value discs you can move, trade, and explain. Model an idea on the big screen, then hand the iPad to a student to try it.

Coming soon to the App Store See how it works

Made for iPad. Also runs on Macs with Apple silicon.

No.Sense Model It showing 1,478 plus 2,356 worked out with place-value discs, mid-problem, after trading ones for a ten
Build-a-Number with discs placed on the place-value mat to make 3,426.5

Build-a-Number

Drag discs onto a place-value mat, from ten thousands down to thousandths, and watch the number build. Free Build to explore, Quiz mode to check understanding.

Model It: Operations modeling an addition problem with discs

Model It: Operations

Addition, subtraction, multiplication, and division with discs. Step through every trade and regroup in Learn mode, then switch to Quiz mode and type the answer.

Round It! highlighting the deciding digit and placing the number on a number line

Round It!

See the deciding digit highlighted and the number on a number line between its two neighbors. Choose which places to practice.

How it works in three steps

  1. Pick a tool

    Open Build-a-Number, Model It: Operations, or Round It! from the menu, and put your iPad on a projector or classroom screen.

  2. Model it together

    In Learn mode, tap Next step and watch each move happen: discs combine, trade, and regroup. Talk through why.

  3. Hand it over

    Switch to Quiz mode and let a student build the number, solve the problem, or choose the rounded value. Quiz progress is saved on the device.

Teach it on one screen, then hand it over

You run No.Sense from your iPad and show it on a projector or classroom display. Then the same screen becomes practice: a student builds, solves, or rounds while the class watches or works alongside.

There are no accounts, no logins, and nothing for students to download, so there is no student data to manage. It works offline, even when the classroom Wi-Fi doesn’t.

  • A large, colorful display built for projecting
  • Learn mode for teaching, Quiz mode for practice
  • No accounts, logins, or student data
  • Works fully offline
  • Adjustable number ranges, regrouping options, and decimal places
  • Runs on iPad, and on Macs with Apple silicon

Why discs?

Every disc is labeled with its value: 1, 10, 100, 1,000, and the decimal places 0.1, 0.01, and 0.001. Students see that ten tens really do trade for one hundred, because ten discs slide into one.

The digit tells how many. The place tells how much. Discs make that difference something you can see and move.

Why it’s called No.Sense

“No.” is short for number, so No.Sense reads as number sense: knowing what numbers mean and how they behave. It also reads as no sense, which is exactly what students say when a math idea won’t click.

No.Sense is built to be the place where that sentence stops being the end of the thinking and becomes the start of it.

Teacher designed. Teacher tested.

  • Free Build and Quiz modes in Build-a-Number
  • Learn mode steps through each trade and regroup
  • Type your own problem in Model It
  • Choose the places to practice in Round It!
  • Sound on or off with one tap
  • Quiz progress stays on the iPad

Ideas for using it in class

Build today’s number

Use Free Build to make the date, a page number, or a number from your lesson, then talk about what each digit is worth.

Trade it, don’t guess it

In Model It, step through a regrouping problem and ask students to predict each trade before you tap Next step.

Use your own problems

Type a problem from your textbook or worksheet into Model It and work it on the big screen.

Round on the number line

Use Round It! to show why the deciding digit decides, and where the number sits between its two neighbors.

A quick check with no paper

Switch any tool to Quiz mode for a fast independent check. Quiz progress is saved on the device.

Small-group intervention

Hand the iPad to one student and let the group coach. There are no accounts and no setup.

No.Sense app icon

Questions and support

Have a question, hit a bug, or want a feature added? Send a note. I read and answer every email myself.

Email Support
How do I use No.Sense in class?

Show it on a projector or classroom screen and use Learn mode to model an idea one step at a time. Then switch to Quiz mode and hand the iPad to a student to try it.

What is the difference between Learn mode and Quiz mode?

Learn mode steps through the idea so you can explain it. Quiz mode asks students to do it themselves: build a number, solve a problem, or choose the rounded value.

Can I use my own problems?

Yes. In Model It: Operations, tap Custom problem and type your own numbers with the on-screen keypad, so you can model a problem straight from your textbook or worksheet.

Do students need their own devices or accounts?

No. You run No.Sense from your iPad and show it on a projector or classroom display. There are no accounts, logins, or downloads for students.

Do I need an internet connection?

No. No.Sense runs entirely on your device, so it works fine on a classroom iPad with no Wi-Fi.

Does No.Sense collect any data?

No. There are no accounts, ads, analytics, or tracking, and nothing leaves your device. Settings and quiz progress stay on the iPad. Read the full privacy policy.

What math does it cover?

Place value from ten thousands down to thousandths, addition, subtraction, multiplication, and division modeled with discs, and rounding decimals to a place you choose. It is built for upper-elementary and middle-school math.

Which iPads does it support?

No.Sense needs iPadOS 16.6 or later.

Can I use it on a Mac?

No.Sense is designed for iPad, and it also runs on Macs with Apple silicon.