Cell Size and Scale Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny. Smaller cells are easily visible under a light microscope. To see anything smaller than 500 nm, you will need an electron microscope. Adenine The label on the nucleotide is not quite accurate. How can an X chromosome be nearly as big as the head of the sperm cell? No, this isn't a mistake. The X chromosome is shown here in a condensed state, as it would appear in a cell that's going through mitosis. A chromosome is made up of genetic material (one long piece of DNA) wrapped around structural support proteins (histones). Carbon The size of the carbon atom is based on its van der Waals radius.
The Circulation Game Purpose of activity: To learn (or review) information about circulation. Basic science concepts covered: distribution of oxygen to cells and carbon dioxide to lungs via red blood cells, production of red blood cells in bone, delivery of sugar and protein to cells via the blood stream, delivery of wastes to the kidneys for disposal out of the body, the heart as the driving force that keeps the blood moving, the “map” of the circulatory system in and out of lungs, heart and body parts. Description: This is a two-team game that can accommodate 2-6 players (possibly 7 or 8). Target age group: ages 8-14 Time allowance: 30-60 minutes to assemble (time greatly depends on how much coloring is done and if assembly is being done by students in class or adults ahead of time) and 30-45 minutes to play Materials needed: Copies of the pattern pages on white card stock, scissors, X-acto knife, clear packaging tape, colored pencils, white glue, thin cardboard (cereal boxes work) Comments are closed.
Zybright | Freebie Library Fun freebies! My Incredible Body is a dynamic anatomy app: just for kids! Fill out the form to the right to get our fun free anatomy activities, which match up perfectly with the content presented in the app. It's a great way to keep kids learning! NEW! Reproductive System FAQs: Why am I starting to sweat more? Don't have the app? My Incredible Body lets kids investigate, experience, and learn human anatomy in a fun, dynamic new way. Get it now! Good Call-To-Action Buttons What can you do to make your calls-to-action more effective? The call-to-action button is an important tool in the user experience designer’s box of tricks. In this article I’ll give you a few pointers on providing effective ones. Prioritizing tasks Some tasks on your website are more important than others. Essentially, both analogies make the point that the majority of your site’s value is provided by a small number of tasks. With these priority tasks, you need to remove any friction that slows the user’s progress. Choosing your words carefully Buttons are for actions, like ‘Get a quote’, ‘Download’, ‘Open an account’, ‘Go to checkout’. Think about what your user would say if you asked him what he was trying to do. Using the right words reduces the friction of your key tasks. Cultural subtleties can be the cause of task friction as well. British people use trolleys (carts) or baskets when in real stores, so in the UK, Amazon calls the ‘Shopping Cart’ the ‘Shopping Basket’. Positioning Size
> Blood Cell Bingo Game Purpose of activity: To review information about all types of blood cells, both red and white cells. Target age group: ages 10 and up (great for high school!) Time allowance: 5-15 minutes per game (play multiple games) Description: This is standard bingo except that the board is made of moveable, double-sided pieces. There are four levels of clues, so the game can easily be played multiple times. Also included are two “cheat sheets” that can be handed out to the players, making the game more of a learning activity and less of a guessing game (since the clues require remembering facts). This game is recommended as a review activity, not as a method of initial teaching. 6 Copies of pattern pages printed onto card stock, some copies on regular paper, about 15 tokens for each player (pennies, candies, etc.) Click here to download Blood Cell Bingo Game Comments are closed.
NOVA - Official Website | Map of the Human Heart Map of the Human Heart Day and night, the muscles of your heart contract and relax to pump blood throughout your body. In the Step Thru below, see the complicated path the blood takes as it moves in and out of the heart. Step Thru Animation Oxygen-poor blood (shown in blue) flows from the body into the right atrium. Anatomy Do right and left seem backward? aortasuperior vena cavaright atriuminferior vena cavapulmonary valvetricuspid valveright ventriclemitral valveleft ventriclepulmonary arteryaortic valveleft atrium Heart Facts Put your hand on your heart. Hold out your hand and make a fist. Give a tennis ball a good, hard squeeze. The aorta, the largest artery in the body, is almost the diameter of a garden hose. Feel your pulse by placing two fingers at pulse points on your neck or wrists. Your body has about 5.6 liters (6 quarts) of blood. The heart pumps about 1 million barrels of blood during an average lifetime—that's enough to fill more than 3 super tankers.
Fancy Formatting, Fancy Words = Looks Like a Promotion = Ignored Summary: A site did most things right, but still had a miserable 14% success rate for its most important task. The reason? Users ignored a key area because it resembled a promotion. Putting the answer to a typical user's main question in big red type at the top of your homepage would guarantee high usability, right? Homepage for www.census.gov, as tested. In a reduced screenshot, the population count is the only information that's clearly readable, so it makes the task easier than it is in real life. The following heatmap from one of our eyetracking studies shows how users looked at this homepage. The areas users looked at the most are colored red; the yellow areas indicate fewer views, followed by the least-viewed blue areas.Gray areas didn't attract any fixations. At first, the heatmap seems fine: On closer inspection, however, it's clear that users only fixated on the first third of the number that shows current population. Where People Looked Conflicting Usability Guidelines?
The Blood Typing Game - about blood groups, blood typing and blood transfusions What happens if you get a blood transfusion with the wrong blood type? Even though a patient's own blood type is the first choice for blood transfusions, it's not always available at the blood bank. Try to save some patients' lives and learn about human blood types! Play the Blood Typing Game About this game Embed the Blood Typing Game onto your own web site or blog Swedish version of the game 2012 Winner of the Best Game Category by Swedish Learning Awards "The winner has created a minimalistic but, at the same time, captivating graphic design which grabs the user's curiosity. See a Video about the Blood Typing Game 3 min. 1. ploster34802. Listed are players who have the highest number of treated patients within the last 24 hours.
Keep Wild Animals Wild Online Activities World Map | Ages 5-7 » Explore the world to learn about how animals are specially suited to live in their habitats. World Map | Ages 8-10 » Discover how the buying and selling of wild animals and their parts (wildlife trade) affects animals around the world. Backyard Naturalist | Ages 5-7 » Wild animals live all around us. Some are easy to see, but others are hard to spot. Practice responsible wildlife watching by searching for animal clues with binoculars. Buyer Beware | Ages 8-10 » Be a responsible shopper by thinking carefully about each product you want to buy, and choose products that do not harm wild animals. Helping Wild Animals Stay Wild | Ages 11-14 » There are many ways we can help animals affected by wildlife trade. web2.0 top designs