Student Number Lines 1-20 by KateandMi | TPT Write On Wipe Off Number Line Student Number Line By Mrs Kati | TPT Odd Even Number Teaching Tool The -20 to 20 Student Number Lines are color coded to make it easy for students to recognize odd and even numbers. Each set of student number lines includes 30 number lines that measure 22 x 1.5 each The -20 to 20 Student Number Lines are color coded to make it easy for students to recognize odd and even numbers. Number Line 0-20 – Madison's Paper Templates Each set of student number lines includes 30 number lines that measure 22 x 1., 5 each.