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Coming soon

A library of lessons teachers make, open to everyone

Soon, teachers will publish what they make on String, and students and parents will open it with no account.

Start freeSee lessons teachers made

Make your first lesson now, so it is ready to publish when the library opens.

The library is empty today. We will open it once it holds work worth opening. There is no date yet.

How the library will work

  1. A teacher publishes

    A teacher picks something they made on String, a lesson, a worksheet or an exam, and sends it to the library.

  2. Our team reviews

    The String team reviews everything sent in before it becomes public.

  3. Everyone opens

    A student or a parent finds the lesson by grade and subject and opens it with no account.

Why this library matters

  • For teachers

    What you made for your class reaches other students, with your name on it.

  • For students

    A ready lesson to open any time. Progress stays on the device until they choose to sign up.

  • For parents

    Find a lesson for your child's grade and open it together, with no account.

A taste of what teachers make today

These are real lessons teachers built on String. Open any of them.

Front view of the 3D human heart model, labelled with its chambers and major vessels
Interactive lesson3D model

Inside the human heart

A 3D heart students explore part by part, from its four chambers to the pulmonary and systemic circuits.

In Arabic4 guided steps
Take a look

Match each business term from the text to its correct definition.

  • USP
  • Bespoke
  • Turnover
  • Quote
  • The feature making a product different and better than others
  • Specially made for a particular customer
  • The amount of business done in a set period of time
  • The estimated price charged for a service
QuizGrade 12

Business and behavioural-economics vocabulary

Eight questions on the Hard Sell unit: reading, matching business terms, and sorting three businesses.

8 questions
Take a look
The story's cover: Rami and Salma in the science lab examining a copper strip and other samples
Story

The secret of the shine and the hammer

Rami and Salma test samples before a science fair: only metals combine shine, malleability and conductivity.

In Arabic9 pages · narrated
Take a look

Using the number line below, which comparison of point A, which represents −4, and point B, which represents 2, is correct?

Choose the correct answer

  • A−4 ≥ 2
  • B−4 < 2
  • C−4 > 2
  • D−4 = 2
WorksheetGrade 6 · Math

Integers and operations on them

Absolute value, comparing on a number line and the four operations, with real-life problems.

In Arabic12 questions
Take a look
The orbit lab: the Sun, the Moon's orbit around the Earth, and the Moon at new moon
Interactive lessonGrade 7

Phases of the Moon: the orbit lab

Students move the Moon along its orbit and watch its shape from Earth change, from new to full moon.

In Arabic2 activities
Take a look

Ordered pair:

(−3, 4)

Quadrant II

Interactive lessonGrade 6 · Math

The coordinate plane

Drag a point across the grid, read its ordered pair and name its quadrant, with a deck and a quiz alongside.

In Arabic3 activities
Take a look
The projectile simulation: a cannon at 45°, the trajectory, a target 30 m away, and readouts for range, maximum height and flight time
Interactive lesson

Physics lab: projectile motion

Set the launch angle, speed and gravity to hit a target 30 m away, with range, height and flight time live.

2 activities
Take a look
The definites shuttle game: the capsule for the word «مَوْكِبٌ» with its sentence, and the indefinite and definite ports
Interactive lessonGrade 6 · Arabic

Definite nouns in Arabic

A space game where students dock each word at the indefinite or definite port, with a deck and a quiz.

In Arabic3 activities
Take a look

Common questions

The String library is a library of lessons that teachers make and publish on String, and that students and parents open with no account. It is coming soon and has not opened yet. The lessons in it are teacher-made, not the text of the school books themselves.

Read moreInteractive lessons

No opening date has been set yet. The String library is empty today, and it will open once it holds work worth opening. If there is a lesson you would like to find in it, you can ask for it on the lesson request page.

Read moreRequest a lesson

Every teacher on String can publish what they made into the library: a lesson, a worksheet or an exam. Publishing is your decision, lesson by lesson, and the String team reviews everything sent in before it becomes public.

Read moreWhy it's freeCreate your free account

No. When the String library opens, a student or a parent will find a lesson by grade and subject and open it with no account. The student's progress stays on their device until they choose to sign up.

Create a free String account and make a lesson, a worksheet or an exam now, so it is ready to publish when the library opens. String's tools are free for teachers.

Read moreCreate your free accountInteractive lessons

Start now, and your lesson is ready to publish

The tools are free for teachers. Make a lesson, a worksheet or an exam, and it is ready when the library opens.

Start free

Request a lesson · Tell us which lesson you would like to find here.