The Remarkable Cocklebur: Worldwide Hitchhiker and Nature's Velcro
This essay from Wayne's Word explores the hitchhiking method of seed dispersal, and how a closer look at one of these bur plants gave rise to an invention.
Making Decisions: Packaging and the Environment
This activity has students redesign and justify the packaging currently used in some consumer products. Design criteria include reducing the amount of packaging material by 25%.
Floaters and Sinkers: Curricular Unit
This curricular unit introduces students to the important concept of density. The focus is on the more easily understood densities of solids, but students can also explore the densities of liquids and gases. Students devise methods to determine the densities of solid objects, including the method of water displacement to determine volumes of irregularly-shaped objects. By comparing densities of various solids to the density of water, and by considering the behavior of different solids when place
How Far?
To learn how friction affects motion, students explore how different textures provide varying amounts of friction to objects moving across them. They build a tool to measure the amount of friction between a note card and various surfaces by measuring the distance that a rubber band stretches. They experiment with a range of materials to determine which provides the least/most friction.
Les Couleurs - Quiz
How well do you know your colors in French?
Cape Hatteras Flyby 2
A flyby from Albemarle Sound to the Cape Hatteras National Seashore in North Carolina, using Landsat data
San Francisco Onion Layers (432) and zoom to San Jose
An animation of Landsat spectral bands, followed by a zoom to San Jose, California.
Angle of Friction
Worked example involving angles of friction using a past LC question.
Dinosaurus in klei In deze les maken leerlingen een dinosaurus in klei. Ze hebben aandacht voor eigenschappen en karaktertrekken van hun dinosaurus.
Posterior Fossa Tumor - Mental Status Exam - Language Sub-exam - Patient 9
Patient is a 58-year-old white male with a history of acoustic neuroma that was resected in 1990. He has residual cranial nerve palsies on the right side and experiences tremors, ataxia and disequilibrium. His wife reports that she has noticed an increase in right hand tremor for the past year or so. The tremor worsens as the day progresses and occurs with activity. Patient reports an increase in balance problems while standing over the past 4 months. He has noticed that he staggers a step or t
San Francisco True Color Time Lapse from SeaWiFS
Transitions between relatively cloud free true color scenes of the San Francisco region from SeaWiFS
Monroe: Era of Good Feelings? (4:36)
This video is a biography about the presidency of James Monroe and the
Monroe Doctrine. Despite a relatively easy presidency, Monroe created
much controversy during his time in the office including the beginnings of the slavery issue and battles with Spain about Florida. This is a good overview of this time and provides insight into the events that were to follow.
Clouds and Precipitation by StudyJams
Clouds are made of water vapor and dust. When the water gets too heavy, it falls back to the Earth. Clouds are named according to their shape, such as cumulous, or puffy, stratus, or blanketed, and cirrus, or high and cold. Learn more about the types of clouds with this slide show from StudyJams. Vibrant images are set to music with information written under each photo. A short, self-checking quiz is also included with this link.
The Assassination of JFK (3:37)
The course of events surrounding JFK's assassination shocked the nation and left more questions than answers. This is a good overview of the events that came after the assassination and the
The Properties of Matter - by StudyJams
Matter is anything that has mass and takes up space. That is why mass and volume are the properties of matter. There are many different kinds of matter: conductors, insulators, and magnets to name a few. Learn more about the properties of matter with this cartoon animation from StudyJams. A short, self-checking quiz is also included with this link.
Gravity and Inertia - by StudyJams
Gravitational force is the constant force of attraction between the masses of two objects. The attraction between objects and the Earth is called gravity. Weight is caused by gravity: it is the measurement of gravity's force on an object's mass. Learn more about gravity and inertia with this cartoon animation from StudyJams. A short, self-checking quiz is also provided with this link.
Seasons - by StudyJams
The Earth has four seasons: summer, fall, winter, and spring, which are caused by the Earth's rotation around the sun and the way the Earth tilts on its axis. Seasons are not the same everywhere. They vary by climate and region. Learn more about the season with this slide show from StudyJams. Vibrant images are set to music while information is written under each photo. A short, self-checking quiz is also included with this link.
Vectors
Definitions and worked examples on the topic of vectors. Excellent revision aid.
Site Libre Savoirs: Economie générale
Domaine: Sciences économiques et sociales
Sciences économiques et raisonnement économique
- la monnaie
- macro-économie et politique économique
- micro-économie
- principaux courants de la pensée économique
