Resources+2

=**Resources Continued** =


 **Armentrout, Patricia. (1997). //Simple Devices: The Inclined Plane.// Vero Beach, FL: The Rourke Press, INC.

Royston, Angela. (2001). //Machines in Action: Levers.// Chicago: Reed Educational and Professional Publishing.

Royston, Angela. (2001). //Machines in Action: Pulleys and Gears.// Chicago: Reed Educational and Professional Publishing.

Royston, Angela. (2001). //Machines in Action: Ramps and Wedges.// Chicago: Reed Educational and Professional Publishing.

Royston, Angela. (2001). //Machines in Action: Screws.// Chicago: Reed Educational and Professional Publishing.

Royston, Angela. (2001). //Machines in Action: Wheels and Cranks.// Chicago: Reed Educational and Professional Publishing.**


 * Silverman, Buffy. (2009). //Simple Machines: Forces in Action.// Chicago: Heinemann Library.**


 * Solway, Andrew. (2006). //Castle Under Siege!: Simple Machines.// Chicago: Raintree.**