In this demonstration, the teacher will use a potato and hydrogen peroxide to generate oxygen in a closed environment. Students can then observe its effects on a burning wooden splint and on burning steel wool. They will understand that a large amount of energy can be released by the process of oxidation. As an extension, the teacher can discuss how the appearance of oxygen (produced by cyanobacteria) in Earth's early atmosphere initially resulted in the formation of large deposits of iron oxide (Banded Iron Formations) and then aided in the evolution of more complex life forms.

The Butterflies in Space Teacher's Guide uses "life in space" to encourage learners to conduct their own open-ended scientific investigations. The guide provides information about the Butterflies in Space experiment conducted aboard the International Space Station and instructions on how to build a habitat and conduct open-ended experiments. The experiment instructions begin on page 11 of the PDF. Learners can build a "Clamshell Habitat" or a "Box Habitat" to raise Painted Lady butterflies.

The University of California, Irvine Extension, supported by generous grants from the William and Flora Hewlett Foundation and The Boeing Company, is developing online courses to prepare science and mathematics teachers for the California Subject Examinations for Teachers (CSET).

UC Irvine Extension's online test-preparation courses correspond with the 10 CSET science subtests and three CSET mathematics subtests.

This module provides an introduction to the concept of carbohydrates as a macronutrient. The biochemical structure of simple sugars and complex carbohydrates are compared and contrasted.

This module provides an overview of the biogeochemical carbon cycle. Major sources and sinks of carbon are discussed as well as the impact of human activities on global carbon levels.

This new annotated guide (part of a series devoted to resources for enjoying or teaching astronomy) features over 250 pieces of music inspired by serious astronomy, including both classical and popular music examples. YouTube links are given for the vast majority, so you (or your students) can listen to them.

Among the pieces included is:
1) a Hubble Space Telescope cantata,
2) eight rock songs about black holes with reasonable science,
3) a supernova piano sonata,
4) a musical exploration of the Messier catalog of nebulae, clusters, and galaxies,
5) a moving song about Stephen Hawking,
6) Moon songs by the Grateful Dead, George Harrison, and the Police,
7) piano pieces “for children with small hands” named after the constellations,
8) operas about Galileo, Kepler, and Einstein,
and many more.

This interactive resource adapted from the National Park Service presents the key concepts of cave and karst systems, including how and where they form, different types, and various cave environments.

This lesson introduces the cell as the basic structural unit of life, and details modern cell theory.

This video segment adapted from NASA describes the basic characteristics of our star, the Sun.

This is the second in a series of modules which detail the research of Charles Darwin and evolutionary theory. This module continues with a discussion of the processes that led to Darwin's formulation of the theory of natural selection.

This module introduces Darwin's Galapagos travels and an introduction to the theory of evolution as a force for biological change and diversification. This is the first in a series of modules which detail the research of Charles Darwin and evolutionary theory.

In this video segment adapted from NOVA, scientists are on the hunt for tornadoes. Using Doppler radar, they gather data in the hopes of solving the mystery of how tornadoes form.

Cheat sheet on using the free planetarium software ‘Stellarium’ for instructors and students.

It discusses the process of equation writing and balancing chemical equations in perspective of the chemical changes that take place during a reaction. This module is the third in a series on chemical reactions.

It introduces the concept of electron exchange and briefly explains exothermic and endothermic reactions. This is the first in a series of modules on chemical reactions.

ofrece las ltimas noticias de la ciencia. La clase de jueves proporciona nuevos planes y actividades de la leccin basados en una historia actual del ttulo y conecta la ltima investigacin de NASA con la instruccin. Pasados asuntos incluyen Buck Rogers, Cuidado!, Adis a la MIR, Despus de tres intentos, se retira La Nia?, y ms.

The purpose of this resource is to have students observe their lilac plants and identify the five phenophases (first leaf, full or 95% leafed, first bloom, full bloom and end of bloom) for each lilac plant. During the growing season, students will observe their lilac plants and identify the five phenophases (first leaf, full or 95% leafed, first bloom, full bloom and end of bloom) for each lilac plant.

This interactive resource adapted from the National Park Service describes the different kinds of sediments that make up coastlines, with a focus on the variety in color, size, and sorting.

This interactive resource adapted from the National Park Service describes the many forces that affect shorelines, including tides, weathering, erosion, and deposition.

Climographs, graphic plots of monthly temperature and precipitation, allow students to see how differences in insolation at various locations affect rates of heating and cooling. In this activity, students use climographs to plot locations using latitude and longitude, calculate annual temperature ranges, and relate unequal rates of heating and cooling to climate variations. They will also construct climographs for two locations in New York, analyze them, and answer questions about their observations.