The Magnetic Demonstration 20-Bead Rekenrek is an innovative teaching resource developed to support teaching for mastery in the classroom. This versatile maths mastery resource has heavy-duty magnets, allowing it to be securely attached to most magnetic surfaces, or it can be easily placed on a table or hung on a wall using the included S-hooks and metal eyelets. The detachable write-and-wipe panel enables teachers to write number sentences or hide unused beads, making it a flexible tool for various teaching scenarios. The included Activity Guide has 4 activities for teachers to incorporate into lesson plans.