The computer program's simulation of a Sonoran desert community should ultimately strengthen the student's comprehension of what is required for a natural ecosystem to sustain itself (remain in balance). This computer simulation program has great flexibility. It allows the student to manipulate the population numbers of five Sonoran Desert species. A species natural history attachment provides vital information for the students to familiarize themselves with each species' behaviors, its niche and food resource needs. The program includes two producers, the Saguaro cactus and the Ironwood Tree. It also includes 3 consumers, but their interactions both toward the producers and each other differ. The community's ability to remain in balance and sustain all five species so that none die out rests on the student's assessment skills enabling him to correctly identify these dependencies. The student learns by trial and error as he continues to fine tune the ecosystem that he maintains stewardship of.

The first video in the Computer Software series, part of our Introduction to Computers course. This video looks at the general types of software, software development, the software development life cycle, as well as explains what computer programers do.

Welcome to one of the most geeky videos in the entire series. This video will introduce you to the computer boot process, the way a computer starts from the moment you turn the computer on, till the operating system kicks in.

Video 3 of our Introduction to Computer course. This course looks at the basics of operating systems. We take a look at what an operating system is, file systems, user interfaces and command line.

In the previous video we looked at the basics of operating systems. In this video we take a look at the current operating systems available to consumer. In addition to looking at Windows, we also cover the current Mac OS X, Linux and Mobile Operating systems.

Links from video:
http://www.ubuntu.com/
http://knopper.net/knoppix/index-en.html

Our last video in the Computer Software lesson, part of our Introduction to Computers curriculum.

In this video we look at the types of application users can find. We talk about business software and personal software. We also give our 3-5 to picks for viewers to check out.

Links from video:
http://www.lynda.com/
http://teamtreehouse.com/
https://www.udemy.com/courses/
https://evernote.com/
http://www.openoffice.org/
http://www.mozilla.org/en-US/thunderbird/
http://bricklin.com/history/vcexecutable.htm
http://www.cultofmac.com/90060/how-to-completely-uninstall-software-under-mac-os-x-macrx/
https://reporting.bsa.org/r/report/add.aspx?src=us&ln=en-us

Video 4 in our Introduction to the CompTIA A+ Certification Exam looks at the tools the computer technician should have in their bag in order to get the job done. We look at hardware tools for computer repair and software tools for computer repair.

This two-semester course provides instruction in the basics of computer construction and repair; emphasizes troubleshooting and diagnosis of hardware and software failures; provides the skills necessary to gain entry-level employment in the field of computer servicing. Students have the opportunity to service and repair a wide range of personal computers while learning theory of operation and gaining programming skills. Students will use a variety of service tools. The operation of each component of a computer is studied and tested while assembling test computers. Designed to provide a solid foundation as a basis for a student's continuing education in the computer sciences.

Today we’re going to talk about how computers see. We’ve long known that our digital cameras and smartphones can take incredibly detailed images, but taking pictures is not quite the same thing. For the past half-century, computer scientists have been working to help our computing devices understand the imagery they capture, leading to advancements everywhere, from tracking hands and whole bodies, biometrics to unlock our phones, and eventually giving autonomous cars the ability to understand their surroundings.

Learn about computers, programming and technology through these free, fun activities.
Puzzles
Activities
Geometry
Counting
Algorithms
Estimation
Computers
Robots
Captcha
& Much more!

The purpose of this series of tasks is to build in a natural way from accessible, concrete problems involving volume to a more abstract understanding of volume. The purpose of this first task is to see the relationship between the side-lengths of a cube and its volume.

The purpose of this series of tasks is to build in a natural way from accessible, concrete problems involving volume to a more abstract understanding of volume. In this iteration, we do away with the lines that delineate individual unit cubes (which makes it more abstract) and generalize from cubes to rectangular prisms.

The purpose of this series of tasks is to build in a natural way from accessible, concrete problems involving volume to a more abstract understanding of volume. Here, we are given the volume and are asked to find the height.

The purpose of this series of tasks is to build in a natural way from accessible, concrete problems involving volume to a more abstract understanding of volume. This problem is based on ArchimedesŐ Principle that the volume of an immersed object is equivalent to the volume of the displaced water.

«Les Compétences pour réussir, anciennement appelées compétences essentielles, ont été identifiées et lancées par le gouvernement du Canada en mai 2021, mettant à jour le cadre existant en réponse à un marché du travail en évolution. Ces 9 compétences sont mises à jour pour refléter l'évolution rapide des besoins et des exigences en matière de compétences:

-Calcul
-Communication
-Collaboration
-Résolution de problèmes
-Rédaction
-Adaptabilité
-Lecture
-Créativité et innovation
-Compétences numériques

Elles constituent la base de l'apprentissage de toutes les autres compétences et permettent aux gens d'évoluer dans leur travail et leur vie et de s'adapter aux changements sur le lieu de travail et dans la vie.

Vous trouverez ci-dessous de plus amples informations sur ces compétences, ainsi que des cahiers d'exercices, des évaluations, des livrets et bien plus encore ! Ces outils sont conçus pour que les élèves et les enseignants les utilisent dans leurs cours.»

An interactive applet and associated web page that demonstrate the concept of a concave polygon - one where at least one interior angle is greater than 180 degrees. The applet shows an irregular polygon initially with one interior angle greater than 180 degrees. The user can drag any vertex and change the number of sides in the range 3..99. When the polygon is concave, the angles that make it so are drawn in red. The goal is to show through experimentation what the concept of concavity really means. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Students investigate the property dependence between concentrations and boiling point. In section 1, students first investigate the boiling point of various liquid solutions. In section 2, they analyze data collected by the entire class to generate two boiling point curves, one for salt solutions and one for sugar solutions. Finally, in section 3, students use the data they have analyzed to determine how to create a solution that has a particular boiling point and is a cost-effective design.

Students learn how the total solar irradiance hitting a photovoltaic (PV) panel can be increased through the use of a concentrating device, such as a reflector or lens. This is the final lesson in the Photovoltaic Efficiency unit and is intended to accompany a fun design project (see the associated Concentrating on the Sun with PVs activity) to wrap up the unit. However, it can be completed independently of the other unit lessons and activities.

Students design, build and test reflectors to measure the effect of solar reflectance on the efficiency of solar PV panels. They use a small PV panel, a multimeter, cardboard and foil to build and test their reflectors in preparation for a class competition. Then they graph and discuss their results with the class. Complete this activity as part of the Photovoltaic Efficiency unit and in conjunction with the Concentrated Solar Power lesson.

Watch your solution change color as you mix chemicals with water. Then check molarity with the concentration meter. What are all the ways you can change the concentration of your solution? Switch solutes to compare different chemicals and find out how concentrated you can go before you hit saturation!