A brief lesson is presented on ways in which things become clean or are cleaned. Two hands-on experiments are described: one in which students learn to sequence, and the other in which students learn about the differences between fact and opinion. (CB)

This science column includes background information, discussion questions, science activities, writing activities, and a bibliography on a different topic each month. The titles of the five installments included in this compilation are: (1) "Chameleons and Other Quick-Change Artists"; (2) "Niagara Falls and Other Super…

A milk processing plant is described. Starter and advanced lesson activities using milk for observation are presented. (MT)

Two task cards which are the basis for primary and intermediate science lessons are included in this article on soil, how it is formed, and what it is made of. (MT)

This science unit focuses on measuring skills using students' own sneakers and the unit of measure. Two activities with differing levels of difficulty are presented. (MT)

Orthodontic braces and how they work are discussed. A science unit and task card on teeth is provided. (MT)

Kite flying as a fun class project is proposed as a way of letting students apply what they've learned about air. A design for a kite made from a trash bag is provided, as are kite flying tips and resources. (MT)

Two units of study on snowflakes, one a starter unit and one advanced, are offered. Classification activities for learning about snowflakes are included. (MT)

A number of hands-on science activities are suggested to acquaint children with the variety and properties of polymers. Common polymers are listed; individual and group activities are described; and a reproducible worksheet is included. (IAH)

A learning unit about earthquakes includes activities for primary grade students, including making inferences and defining operationally. Task cards are included for independent study on earthquake maps and earthquake measuring. (CB)

Presents suggestions for teaching children the science of physical fitness along with cross-curricular activities that help them stay in shape. Activities include making a fitness log to keep track of newly learned daily exercises, teaching about the Appalachian Trail then calculating and walking the equivalent distance, and charting family…

Presents activities on the science of garbage to help elementary students learn to save the earth. A rotting experiment teaches students what happens to apple slices sealed in plastic or buried in damp soil. Other activities include reading stories on the subject and conducting classroom composting or toxic materials projects. (SM)

Science activities using popcorn are described, involving history and mythology, and investigative, inference, and classification skills. (CB)

A discussion of TV weather forecasting introduces this article which features several hands-on science activities involving observing, researching, and experimenting with the weather. A reproducible worksheet on the reliability of weather forecasts is included. (IAH)

This article describes science activities which introduce students to the mechanics of sound while encouraging class musicians to share their expertise. A reproducible activity sheet is included. (IAH)