Particle Sensing: The Coulter Counter
Students are presented with a short lesson on the Coulter principle — an electronic method to detect microscopic particles and determine their concentration in fluid. Depending on the focus of study, students can investigate the industrial and medical applications of particle detection, the physics of fluid flow and electric current through the apparatus, or the chemistry of the electrolytes used in the apparatus.
Heredity Mix ’n Match
Students randomly select jelly beans (or other candy) that represent genes for several human traits such as tongue-rolling ability and eye color. Then, working in pairs (preferably of mixed gender), students randomly choose new pairs of jelly beans from those corresponding to their own genotypes. The new pairs are placed on toothpicks to represent the chromosomes of the couple’s offspring. Finally, students compare genotypes and phenotypes of parents and offspring for all the “couples” in
The Benefits of Biodiversity
First, students toss coins to determine what traits a set of mouse parents possess, such as fur color, body size, heat tolerance, and running speed. Next they use coin tossing to determine the traits a mouse pup born to these parents possesses. These physical features are then compared to features that would be most adaptive in several different environmental conditions. Finally, students consider what would happen to the mouse offspring if those environmental conditions were to change: which mi
Where Am I: Navigation and Satellites
How do we know where we are? What happens if you are completely lost in the middle of nowhere? Does technology provide tools for people lost in their travels? A person cannot usually determine an accurate position just by looking out a window in the middle of the ocean or vast area of land, particularly if it has not been charted before. In this lesson, students explore the concept of triangulation that is used in navigation satellites and global positioning systems designed by engineers. Also,
Designing Medical Devices for the Ear
Students are introduced to engineering, and more specifically, to biomedical engineering and the engineering design process through a short lecture and interactive, hands-on activity (approximately 30 minutes long), where students design their own medical device for retrieving foreign bodies from the ear canal. In this lesson, the teacher first reviews the basics of ear anatomy then discusses how ear infections occur and how they are treated. Following antibiotic treatment, the most common treat
"Put your books away,"
This issue of Middle Ground looks at different forms of assessment.,Volume 12, Number 2
Solar Paths: An International and Integrated Look at the Sun and Seasons
Some of the most difficult concepts for students to understand in Earth science are the ideas and explanations related to the Sun and seasons. The daily rotation of the Earth causes day and night, and the differences of how it is observed at different locations on Earth is a concept that is a challenge for many middle-school-age students to grasp. This article describes how to present these ideas to students using an international perspective and integrated approach that includes myth, archaeolo
Downhill Science: Alpine Skiing
The following resource is from Lessonopoly, which has created student activities and lesson plans to support the video series, Science of the Olympic Winter Games, created by NBC Learn and the National Science Foundation. Featuring exclusive footage from NBC Sports and contributions from Olympic athletes and NSF scientists, the series will help teach your students valuable scientific concepts. In this activity, students will explore the physics of alpine skiing by simulating a downhill run and r
Everyday Engineering: What makes a squirt gun squirt?
You may not think of engineering and squirt guns in the same sentence. However, like many examples of engineering design, the squirt gun pump mechanism is uncomplicated, yet elegant, and very inexpensive to manufacture. The design is widely used because of its simplicity and low cost. With only a few moving parts, it is able to deliver a stream of water, a spray of cleanser, or a squirt of liquid soap. In this article, the authors will examine how these simple, everyday pumps operate. In additio
Geologic Time: Eons, Eras, and Epochs
This resource guide from the Middle School Portal 2 project, written specifically for teachers, provides links to exemplary resources including background information, lessons, career information, and related national science education standards. This publication contains resources designed to do three things. The first is to complement teacher content knowledge and its relationship to the nature of geologic science. Geology is not a laboratory based science lending itself to traditional notions
This video gives a quick glimpse of life and times of the mayfly on the Mississippi. It's life span is only 24 hours long. This video could also be used with a lesson about life cycles. Time 2:29
Welcome & Plenary I: Population, Consumption and Human Wellbeing
Welcome remarks were made by Haile Debas, Steve Shortell and John Stobo. Plenary I was chaired by Malcolm Potts, with a keynote speech by Sir John E. Sulston and comments by panelists Ndola Prata and Jaime Sepulveda.
Intro to Chemistry: 10.1 Introduction to Acids and Bases (1/2)
Join award winning teachers Jonathan Bergmann and Aaron Sams as they interactively teach Chemistry: 10.1 Introduction to Acids and Bases. Common acids and bases are identified. The properties of acids and bases are also identified. ( 8:01)
PowerPoint Games: Teaching with Games. Excuse Me.... Teach with games?
This 2:38 video provides some startling statistics that should be viewed by all teachers. It also has good hints on how to make PowerPoint Games.
Virtual Maths - Basic Structures, bending moment uniformly distributed load
Interactive simulation demonstrating bending moment of uniformly distributed load
Professor Sir Leszek Borysiewicz: Challenges of global health
Professor Sir Leszek Borysiewicz, Vice-Chancellor of the University of Cambridge, delivers a public lecture at Madingley Hall on 24 November 2011. The lecture is chaired by Dr Ron Zimmern, Chairman of the Foundation for Genomics and Population Health, and introduced by Dr Rebecca Lingwood, Director of Continuing Education at the University of Cambridge. Please note that the lecture proper begins at the 4:05 minute point in the video.
Intro to Chemistry: 10.5 Titrations in Chemistry (2/3)
Join award winning teachers Jonathan Bergmann and Aaron Sams as they interactively teach Chemistry: 10.5 Titrations in Chemistry.
Past tense grammar presentation
Past tense grammar presentation.