Bio Ed Online: What Is One Part Per Million Solution?

The 15th lesson in the series of 24 helps your classes understand the ppm (part per million) unit of measure. First, scholars experiment with food coloring to determine concentrations before applying their findings to calculate...

Water may appear to be crystal clear, but there could be dissolved substances present. Lab groups make a one-part-per-million of a food coloring solution to demonstrate this concept. As part of an outstanding unit about water, this...

Students develop a comprehension of parts per million as a concept. They work in teams to create successive dilutions of a solution to reach a parts-per-million concentration. Students list what they think the atmosphere is made of. They...

In this parts per hundred worksheet, students read about describing components of a population by parts per a given number such as 100, 100 or 1 million. Students are given 6 problems to calculate the parts per hundred for each sample...

The Science of Water Teacher's Guide provides a number of inquiry-based activities for grades 3-5 (although it can be expanded for other grades). The guide contains science lessons that enable students to explore water, behavior of...

Do you know what makes up soil? Soil is a combination of many different living and non-living things and provides raw materials needed by all living things. In this lesson learners will explore a sample of natural soil by identifying and...

For this lesson students will create and investigate a simple model of the water cycle. Student sheets are provided in English and in Spanish.

Learners use a pipette to mix small amounts of food coloring into water. They visualize the small quantities of parts per million and parts per billion. Contrary to the title, the lesson is about liquid amounts rather than gas amounts....

A pre-assessment at the beginning of a unit on microorganisms to see what students understand about microbes. The lesson and a set of slides can be downloaded. An included instructional video on microbes is 14 min. 44 sec.

After watching a short film about the anatomy and physiology of fungi, discuss with your class the seven provided Think questions, or make up your own. The animation is in the style of colorful artistic drawings and text that appears in...