Graspable Math Sidebar is a Chrome extension developed by Erik Weitnauer. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools. The extension allows users to interact with mathematical expressions found on webpages, including those on Wikipedia.

With Graspable Math Sidebar, users can turn static mathematical expressions into dynamic objects. The extension provides a sidebar that allows users to work on any algebra on the page. Users can drag and drop formulas into the sidebar or enter them directly. Once the expressions are added, users can interact with the terms to create algebraic derivations.

The extension offers various features to enhance the user experience. Users can drag text and Wikipedia images of math expressions into the sidebar to make them interactive. Additionally, users can interact with expressions using mouse gestures, move whole derivations around, and pack and unpack lines of a derivation. The extension also allows users to substitute values by dragging one side of an equation onto matching targets.

It is worth noting that the dynamic algebra notation used in Graspable Math Sidebar is backed by research from Indiana University Bloomington and Worcester Polytechnic Institute.

Overall, Graspable Math Sidebar is a useful tool for anyone who frequently works with mathematical expressions on webpages. It provides a convenient way to interact with and manipulate algebraic derivations, making it easier to understand and work with complex mathematical concepts.