Sight word acquisition is an important building block in the construction of a child's ability to read. Kindergarteners need practice to learn sight words. This lesson provides them with a fun way to learn new words.
Come and discover ways to see in the dark! Students will conduct an investigation on light and dark. The investigation will allow students to gather evidence on how items illuminate. Using cause and effect, the students will demonstrate an understanding of objects illuminating using an external light source. Students will record their observations and evidence in their scientific journals.
Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.
By the end of this section, you will be able to do the following:
Explain how electromagnetic waves differ from sound waves
Trace the path of light through the eye to the point of the optic nerve
Explain tonic activity as it is manifested in photoreceptors in the retina
Students examine the structure and function of the human eye, learning some amazing features about our eyes, which provide us with sight and an understanding of our surroundings. Students also learn about some common eye problems and the biomedical devices and medical procedures that resolve or help to lessen the effects of these vision deficiencies, including vision correction surgery.
Come along with Eric as he teaches Christmas Bear how to use his five senses.
Students' understanding of how robotic ultrasonic sensors work is reinforced in a design challenge involving LEGO MINDSTORMS(TM) NXT robots and ultrasonic sensors. Student groups program their robots to move freely without bumping into obstacles (toy LEGO people). They practice and learn programming skills and logic design in parallel. They see how robots take input from ultrasonic sensors and use it to make decisions to move, resulting in behavior similar to the human sense of sight but through the use of sound sensors, more like echolocation. Students design-test-redesign-retest to achieve successful programs. A PowerPoint® presentation and pre/post quizzes are provided.
Watch and listen to this catchy jingle to learn the following high-frequency words: said, have, like, come, some, what, and, when. [2:17]
Zoologist Dan-Erik Nilsson demonstrates how the complex human eye could have evolved from simple light-sensitive cells. From a PBS show called "Evolution: Darwin's Dangerous Idea." Includes background reading material and discussion questions. [4:08]
Students learn the basics of the electromagnetic spectrum and how various types of electromagnetic waves are related in terms of wavelength and energy. In addition, they are introduced to the various types of waves that make up the electromagnetic spectrum including, radio waves, ultraviolet waves, visible light and infrared waves. These topics help inform students before they turn to designing solutions to an overarching engineering challenge question.
Students learn about how ultrasonic sensors work, reinforcing the connection between this sensor and how humans, bats and dolphins estimate distance. They learn the echolocation process sound waves transmitted, bounced back and received, with the time difference used to calculate the distance of objects. Two mini-activities, which use LEGO MINDSTORMS(TM) NXT robots and ultrasonic sensors, give students a chance to experiment with ultrasonic sensors in preparation for the associated activity. A PowerPoint® presentation explains stimulus-to-response pathways, sensor fundamentals, and details about the LEGO ultrasonic sensor. Pre/post quizzes are provided. This lesson and its associated activity enable students to gain a deeper understanding of how robots can take sensor input and use it to make decisions via programming.
This extensive site has links to games and activities that teach students to read 30 high-frequency irregular words. There are over 20 activities and games at the bottom of the site in additional to sequenced irregular word activities. The site also contains links to printable word cards, activity logs, and lists of additional irregular words.
Vision is something that can sometimes be taken for granted until a problem arises. Find out why taking care of your eyes is so important as well as procedure that insure proper eyesight.
What's it like for people who are visually impaired? How does it happen and what can be done? Be sure to read the whole article and click on the tabs to the right for more information.
Learn about the many forms of animal communication.
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Students learn about the basic properties of light and how light interacts with objects. They are introduced to the additive and subtractive color systems, and the phenomena of refraction. Students further explore the differences between the additive and subtractive color systems via predictions, observations and analysis during three demonstrations. These topics help students gain a better understanding of how light is connected to color, bringing them closer to answering an overarching engineering challenge question.
This video segment explores how humans perceive the world through vision. Footage from NOVA: "Mystery of the Senses: Vision." [4:11]
Wow! A great page full of different experiments to illustrate the phenomena of optical illusions, and then it explains what is happening!
