Skip to content
العربية

String — Interactive Lessons

You describe the lesson. Your student plays it

Not a sheet to print and not a video to watch. It is an activity your student walks through one screen at a time, and every answer is marked the moment it is given.

A student's screen mid-answer: «Question 1 of 12» along the top, the task «Shade what 3/6 + 2/6 comes to», and under it a bar cut into six parts with five of them shaded and a counter reading «Shaded: 5 / 6». No verdict on the screen yet — the «Check» button is still waiting at the bottom, with a hint chip beside it that costs 30%.
Your student's screen, not yours: they press Check and learn there and then whether it was right, and are shown the right answer when it was not.

By the numbers

  • 23

    question types a lesson can ask

  • 12

    kinds of card a lesson is built from

  • 169

    interactive figures, ready to use

  • 7

    ways a student answers on a drawing

You write one line. It becomes a lesson you send

Four steps, and the first one takes under a minute.

  1. 1

    Say what you're teaching, and to whom

    The grade, the subject and the topic, then two questions: where it will be used — in class or at home — and what for: teaching it for the first time, reviewing it, or checking what they already know.

  2. 2

    Describe the lesson in one sentence

    Write it the way you'd say it to a colleague in the staff room. No fields, no templates, no advanced options before you have seen anything.

  3. 3

    Delete whatever doesn't look like your class

    Cards arrive as suggestions and none of them enters the lesson until you accept it. Drag to reorder, delete a card, or ask for a simpler version for the students who are struggling.

  4. 4

    Send one link

    Your student opens it on their phone, types a first name, and starts. No account, no app to install, no password to forget.

The teacher's canvas: a column of cards opening with a pink setup card that carries the curriculum «Jordan · Grade 6 · Mathematics», then a «Game» card and an «Explanation» card, the first of them with a numbered strip of layers and an add button beneath it. Alongside them the assistant column holds a finished build log and a question back to the teacher — which of the three common mistakes actually turns up in their class.
The other screen: the lesson is built here card by card, and String asks before it adds rather than after.

The lesson is yours, not the output of a black box

Everything that comes out opens up. The card, the question, the drawing inside the question, the order of the whole lesson — none of it is locked, and none of it changes on its own once you are happy with it.

  • Drag the cards to reorder the lesson, or delete one.
  • Open any question and change its wording, its options and its right answer.
  • Swap the figure inside a question, or change what the student is asked to do with it.
  • Layer up to five things onto one card: narration, a companion, a guided walkthrough.

What a lesson can ask

23 question types, and seven ways to answer on a drawing — all marked by the same engine you saw in the preview.

Written questions

  • Multiple choice
  • Choose all that apply
  • True or false
  • Short answer
  • Long answer
  • Numeric answer
  • Fraction answer
  • Fill in the blank
  • Multi-part question
  • Circle the right one
  • Complete the table
  • Comparison grid

Ordering and sorting

  • Put steps in order
  • Build a sentence from a word bank
  • Match pairs
  • Sort into groups

Answering on the drawing itself

  • Mark a point on a scale
  • Tap the right region
  • Shade the parts
  • Plot a point on the plane
  • Drag a label to where it belongs
  • Type in the box
  • Draw it yourself

What your student gets

Built for the phone in their hand, not the computer in the lab.

  • One link, no accounts

    They open the link, type a name, and start. No sign-up, no email, no whole class stuck at a password screen.

  • They know at once if it was right

    No waiting for the next period. The verdict lands as they answer, and when they're wrong the right answer is named rather than left hanging.

  • They answer on the drawing

    They shade five sixths of a fraction bar, plot a point on the plane, tap the region two sets share. The drawing is the answer.

  • Arabic and English, both

    The interface, the questions and the figures, right-to-left and left-to-right. Western numerals in both, the way a student writes them on paper.

What still needs your own eyes

Long answers, comparison grids and free drawings are not machine-marked. They are handed to you rather than guessed at, because an invented mark on an essay is worse than no mark. Everything else is marked the moment it is answered.

Common questions

A String shows one activity per screen with a visible progress bar, opens on a phone with no account and no download, and never disables the button that moves forward — so a student stuck on one question can pass it rather than abandoning the whole lesson.

Yes, and all of it is editable: the wording of any question, its options, its right answer, the figure drawn inside it, and the order of the cards — and suggested cards do not enter the lesson at all until you accept them one by one.

You pick the grade, the subject and the topic before anything is built, the lesson is written from what you picked, and you can change any part of it afterwards — the questions and figures are not tied to one textbook or one ministry.

Nothing is added to the lesson without your approval, so a mistake is caught while it is still a suggestion on your screen rather than an activity in a student's hands, and you either discard the card or open the question and fix it yourself.

They need neither: the lesson is one link that opens in a phone browser and asks for a first name and nothing else — no email, no password, and no app to install on a device they may not own.

Read next

Start with one lesson

Write the topic of your next period and see what comes out before you decide anything.

Start freeNo credit card