In this video Paul Andersen shows conceptual thinking in a mini-lesson on energy and energy transfer. TERMS Energy - the ability to cause change Object - a material thing that can be seen and touched Transfer - the conversion of one form...

Paul Andersen introduces science for the science classroom. He starts with a brief description of Big Data and why it is important that we prepare future scientists to deal intelligently with large amounts of data. He explains the...

In this video Paul Andersen explains how the wavelength is the distance between oscillations in a wave. In a longitudinal wave this might be the distance between areas of compression. In a transverse wave it might be the distance between...

In this video Paul Andersen explains how the electrochemical gradient is a combination of the chemical and electrical gradient of ions. As ions move across a membrane the potential change creates a hidden force that isn't always apparent.

Mr. Andersen explains Hardy-Weinberg equilibrium and describes the bead lab.

Slow motion video of a classic science demonstration. Why does the candle rise?

In this video Paul Andersen explains how the angular momentum of an object if a product of the rotational inertia and the angular velocity. The rotational inertia depends on the mass, radius and shape of the rotating objects. A sample...

Atoms or molecules combine to form a new compound in a synthesis reaction. Examples include the addition of oxygen to magnesium metal to create magnesium oxide and the addition of carbon dioxide to water to crete carbonic acid. A combine...

In this video Paul Andersen explains how the electric field between oppositely and equally charged plates is uniform as long as you are far from the edge. The strength of the electric field can be determined by either the charge of the...

Paul Andersen explains how the structure of objects are related to their function and vice versa. He begins with a quick quiz on bicycle construction and ends with a progression of teaching for students grades K-12. He also explains how...

Paul Andersen explains how changes in the signal transduction pathway can affect organisms. He begins with a brief discussion of the tetrodotoxin produced by the California Newt and then explains how anthrax affects adenylate cyclase and...

Paul Andersen explains the niche. He gives three different pronunciations and two different definitions. He then discusses the competitive exclusion principle and the idea that a niche cannot be shared by two species.

Paul Andersen begins this podcast with a discussion of brain lateralization and gives a brief demonstration of tests that were performed on split-brain individuals. He then discusses the major parts of a neuron and explains how action...

In this video Paul Andersen explains why light is important in probing matter. Light travels in photons and the energy of individual photons is determined by Planck's equation. Infrared spectroscopy is useful in detecting the vibrations...

In this video Paul Andersen explains how stimulated emission can be used to create coherent light. When an atom absorbs a photon it moves to a higher energy level through stimulated absorption. It may then release a photon and moves to a...

Paul Andersen explains how organisms regulate timing and control. Phototropism and Photoperiodism allow plants to respond to light throughout the day and year. Circadian rhythms are used in all organisms (including animals) as an...

In this video Paul Andersen explains how matter can act as a wave at the nanoscale. Louis de Broglie showed that the wavelength of matter can be calculated using the momentum of an object and Planck's constant. The Davisson-Germer...

Backyardbrain's Human-Human Interface arrived today. Special thanks to my kids for volunteering to apply and receive the shocks.

In this video Paul Andersen shows conceptual thinking in a mini-lesson on stability and change. Two examples are included in the video and two additional examples are included in the linked thinking slides. TERMS Change - to become...

In this video Paul Andersen explains how the gravitational mass is a measure of the force on an object in a gravitational field. The gravitational mass is based on the amount of material in an object and can be measured to a standard kg...

In this video Paul Andersen explains how chemical analysis is important in determining the composition, purity and empirical formula of a compound. An empirical formula determination problem is also included.

A mini-lesson on patterns of change.

In this video Paul Andersen shows conceptual thinking in a mini-lesson on stability and change. Two examples are included in the video and two additional examples are included in the linked thinking slides. TERMS Change over time - to...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on probability and prediction. TERMS: Cause - a thing that gives rise to an event Effect - an event Relationship- interconnection between parts of a system...