The museum engaged with the German International School for STEM demonstrations. They are located within walking distance to the museum so we setup hour events at the museum for each classes. Our STEM demonstration consists of four separate events that we rotate the students through in groups of 5 or 6.

LCD Demonstration
This demonstration consists of understanding liquid crystal technology and the requirement for a backlight. One demonstration consists of separating the backlight so the students can observe just the liquid crystal panel. Another demonstrations shows additive color with red, green, and blue primary colors. The students can use the microscope to see the individual pixels comprises of the primary colors and how they generate color mixtures.

Vector Graphics Demonstration
This demonstration utilizes the 4052 computer graphics system. We demonstrate simple vector graphics and  show them the code listing to draw these images. We demonstrate the use of wireframe line drawings and relation to mold creation or 3D printing. We then let the students experiment with our Instant Art program which is always a hit.

LED Demonstration
This demonstration utilizes TM500 instrumentation and an oscilloscope to control and measure the voltage of various color LEDs. A tri-color LED demonstrates the formation of colors from the three primary colors. Pulse width modulation is used to control the brightness with using the oscilloscope to understand frequency and pulse width. Red, green, and blue flashlights are used to combine and create white light. The students are able to block the various flashlights to see the combination. Blocking a small portion of all three demonstrates the complimentary colors of yellow, cyan, and magenta.

Sound and Wave Demonstration
A frequency generator drives a subwoofer to demonstrate creation of linear motion below the range of hearing. Students are able to see and feel the cone movement and the waveform on the oscilloscope as the frequency is increased into the audio range. A guitar is used to demonstrate wave shape, wavelength, and fifths and octaves. A synthesizer demonstrates the sound differences between sine, triangle, ramp, and square waves. A microphone is used for a hands-on exploration of voice and sounds using the oscilloscope.

Sorry, we have no pictures with the students.