An interactive applet and associated web page that demonstrate the the concept of adjacent arcs. The user can 3 drag points around a circle that define the endpoints of two adjacent arcs. Web page has the properties of adjacent arcs. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

An interactive applet and associated web page that demonstrate the concept of an arc. The applet shows a circle with part of it highlighted to identify the arc. Each endpoint of the arc can be dragged to resize it. The web page has definitions and links to the properties of an arc. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

An interactive applet and associated web page that demonstrate the concept of arc length. The applet shows a circle with part of its circumference highlighted and the central angle shown. As the user drags either end of the arc it is redrawn and the calculation for arc length changes as you drag. The text on the web page gives the formula for calculating the arc length. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Familial adenomatous polyposis (FAP) is an inherited disorder characterized by the formation of up to several thousand tumors in the rectum and colon. FAP is usually caused by a mutation of the adenomatous polyposis coli (APC) gene. While the molecular changes linking this mutation to tumor formation are not fully understood, dysregulated apoptosis—a form of programmed cell death—is known to play a prominent role. Now, researchers have uncovered a pattern of expression of an apoptosis-regulating protein that may help explain how FAP tumors form. The protein is called apoptosis repressor with caspase recruitment domain, or ARC. The team examined the expression of ARC in 212 FAP tumor samples from 80 patients. They found that ARC was expressed in the cytoplasm of most tumor cells, as well as in the nuclei..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

The purpose of the 1G destructive bend test is to assess the student's ability to create a structurally sound material.

This lesson will help students become more proficient at creating a weld bead in the flat position.

These Trigonometry lecture videos coterminal angles, trig functions, quadrantal angles, special acute angles, co-functions, finding theta, reference angles, trig functions, radian measure, arc length, area of a sector, graphing sine and cosine using t-table, amplitude and frequency, phase shift for sine and consine, vertical shift, tangent curve, cotangent transformations, evaluating trig identities, trig expressions, sum and difference for cosine, double and half angle identities, inverse, principal values, solving difficult trig equations, law of cosines, area of a triangle, and vectors and bearing.