Place Value Windows are perfect for take-home manipulatives, desk references, math centers and math journaling. This unique format provides a hands-on tool for supporting standards-based instruction. Place Value windows are an interactive tool to support students learning the foundations of place value. Hands-on manipulatives can be used during center times, group work, individual work or when students have completed other tasks! Each pack includes 30 hundreds boards and 30 place value windows.