This worksheet contains questions about SDT and worked solutions. The questions range in difficulty level - some may be very challenging - but they should take students confident with SDT approx. 15 minutes to complete. All resources are produced for private, individual student use. The sharing of resources is strictly prohibited without prior permission. If you are an institution, business, tutor or teacher and would like access to the resources to use with multiple students, please contact the page for further details and permission.