learnr2

learnr2 creates interactive R tutorials that run entirely in the reader’s web browser using Quarto and WebR, via the quarto-live extension. It offers learnr-style authoring conveniences — scaffolding, exercises, hints, solutions, and quizzes — without Shiny, R Markdown, or a server. A rendered tutorial is a self-contained HTML page.

Installation

Install the released version of learnr2 from CRAN:

install.packages("learnr2")

Or install the development version from GitHub:

# install.packages("pak")
pak::pak("PPBDS/learnr2")

You will also need the Quarto CLI.

Usage

Try the bundled feature-tour tutorial:

library(learnr2)

available_tutorials()          # list tutorials bundled with a package
run_tutorial("hello-learnr2")  # render + open in your browser

Scaffold your own tutorial:

create_tutorial("my-tutorial", dir = ".")

This creates my-tutorial/my-tutorial.qmd (under the directory you name; there is no default) with the quarto-live extension copied alongside it, so it renders out of the box with Quarto or quarto::quarto_render().

What’s inside a tutorial

• Live code cells — editable, runnable R that executes in the browser.
• Exercises — cells with blanks, plus .hint and .solution blocks.
• Automatic grading — powered by gradethis.
• Quiz questions — question() / quiz(), graded in the browser with plain JavaScript, including single/multiple choice, free-text, and reflection questions (optionally answered with a pasted screenshot). Answers persist in the browser’s localStorage.
• Student info and submission — student_info() collects a name and email; download_answers_button() bundles every saved answer into a JSON file the reader can turn in. No server involved.
• Progressive reveal — sections unlock one at a time behind “Continue” buttons, the table of contents can’t be used to read ahead unless tutorial_options(allow_skip = TRUE) says so, and every page has a “Start Over” button that clears saved progress.

See the bundled hello-learnr2 tutorial and the reference index for details. Two vignettes cover writing tutorials: “Tutorials in the Age of AI” on how a tutorial should teach, and “Translating learnr Tutorials” on how one is put together, including converting an existing learnr tutorial.