Trig Tray from Think It By Hand will enable your students to investigate and construct foundational elements within Trigonometry.  Your students will gain the understanding of function and form that often eludes their grasp.  The Trig Tray and Student Workbook (sold separately) also provide you with a neat and organized assessment portfolio of each student's progress. 

Special package pricing when ordering 16 or more trays or student workbooks by calling (888) 723-4402.