NY Regents Physics Samples A force vector was resolved into two perpendicular components, F1 and F2, as shown in the accompanying diagram. Which vector best represents the original force? Base …

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Information about Problem-Attic Problem-Attic launched during the 2012–13 school year. To date it’s had close to 60,000 signups, making it one of the fastest growing educational websites in the U.S. …

1 Cell Biology Introduction to cells Ultrastructure of cells Membrane structure Membrane transport The origin of cells Cell division

Teachers Love Problem-Attic! I have been using Problem-Attic for a couple years now and I love it!! It is user-friendly and the questions are wonderful, rigorous and very relevant. Thank you for the great …

Chemistry This document shows the AP Chemistry course syllabus (2014 revised edition) with number of questions in Problem-Attic on the right (in blue). The counts are current as of October 6, 2017, …

Illustrative Math Samples Form A 1. Draw an identical copy of each triangle such that the two copies together form a parallelogram. If you get stuck, consider using tracing paper. Three triangles labeled …

San Francisco Bay Watershed Curriculum A Collection of Activities and Action Projects About the San Francisco Bay Watershed for Middle and High School Students

15 Leg kick! Leg kick! Prance, prance, prance! My friend catches my shadow's hand. Hand in shadow,

For thousands of years, people living at northern latitudes had no idea how high up the Aurora Borealis was located. Before the advent of photography in the 1880's, auroral observers tried to determine the …