Use our journal with our STEM kits—or with any STEM project—and watch kids master the design process! Our journal helps kids track their progress through all 4 steps of the design process—so they can learn from their mistakes and improve their designs! Plus, it includes instructions for 3 additional guided STEM challenges…and lots of extra pages for testing and retesting! The 50-page journal measures 8 1/4" x 10 1/2".