Use this flexible workspace to explore number relationships, model basic operations (addition, subtraction, multiplication, and division), practice working with fractions and decimals, and more! An open number line is a blank line that students can use to understand and visualize the magnitude of a number. Red and white linking blocks allow students to create number lines that make it easy to see groups of 5 or 10, building the foundations for mental math strategies. The write‑on/wipe-off surface and unmarked number line provide a way for students to model their thinking with any range of numbers, allowing for versatile number modeling. Color-coded blocks help with grouping numbers and developing mental math strategies. This Starter Set includes 25 red and 25 white linking blocks. The built-in track that fits up to 40 linking blocks. Organize the components with ease! The tray is designed to slide open and closed, with built-in storage for the included linking blocks and dry-erase marker. This set includes 1 Open Number Line Tray, 50 Linking Blocks (25 red and 25 white blocks), 1 Dry-Erase Marker, and 1 Activity Guide. For over 50 years, hand2mind has encouraged hands-on learning and discovery, driving deeper understanding and helping children unlock their full potential. hand2mind specializes in math manipulatives designed to help students learn by doing. Particularly with place value, hand2mind supplies place value manipulatives like Base Ten Blocks and Place Value Discs to help kids comprehend thousands, hundreds, decimals and more! From early math to Middle School math, hand2mind has you covered with products designed to enhance learning in the classroom and the world around us. Through hands-on exploration and discovery, we strive to find new ways to encourage students in math practice, literacy activities, STEM education and more!