In this interactive object, learners follow steps to assemble a wire feed welding torch or gun.

The explanation and use of timing diagrams used in digital electronics to graphically show the operation of various circuits are given.

In this learning activity you'll review the steps for calibrating the length of depth micrometer measuring rods.

Students review the functions of the keys on the Starrett HB400 Optical Comparator controller.

In this learning activity you'll apply the Pythagorean Theorem to isosceles and equilateral triangles.

In this animated object, learners examine the properties of the hydrogen bond and how the bond changes when hair is shampooed or styled.

This learning object shows how the shape of a stain defines the angle of impact. In general terms the more circular the stain, the more perpendicular will be the angle at which it struck the surface. The more elliptical the shape of the stain, the more acute the angle will be. With practice and experience, the analyst can recognize the general angle of impact based solely on the shape of the stain.

In this learning activity you'll describe the operation of an AND gate by using a truth table, a waveform diagram, a Boolean Algebra equation, a switch analogy, and a written definition.

In this learning activity you'll review how an OR gate operates using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

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Terms and definitions

Join the Mathball league and become a math champion! In this game players must use their knowledge of missing variable equations to outsmart their opponents and score goals With different game modes and difficulty levels Mathball is a fun and challenging way to improve your math skills So grab your jersey and get ready to hit the field in the ultimate math showdown!

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