Our Five Senses Sight Ear Smell Eye Taste Skin Touch Nose Hearing Tongue

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Our Five Senses Sight Ear Smell Eye Taste Skin Touch Nose Hearing Tongue

_______________________________________________ Gr 2-3 Activity NAME What do you think life is like in the soil? We use our five senses every day, they help us know things about the world around us. Some organisms that live in the soil, like earthworms, have senses also and use them to survive in the soil. Write a sentence about why you think earthworms like living in the soil. ________________________________________________________________________________________ ________________________________________________________________________________________ Our Five Senses EARTHWORMS & SENSES Draw a line to match the sense we use SIGHT Earthworms don’t have eyes like we do, they have organs to the body part. that help them sense whether they are in the light or in the dark. SMELL Earthworms don’t have a sense of smell or a nose to sight ear breathe with like we do, but they do have to breathe! Earthworms smell eye breathe by absorbing oxygen through their skin. taste skin TASTE Worms have sense organs in the front end of their body which help them find food. touch nose TOUCH Earthworms do have a sense of touch and like us hearing tongue they can feel it anywhere on their skin. HEARING Vibrations on our ear drums help us hear. Earthworms don’t have ears, but they can sense vibrations in the soil. EARTHWORMS & SOIL Earthworms make their homes IN the soil. We make our homes ON the soil. We "need" certain "conditions" in our environment to survive. Earthworms "need" certain "conditions" in the soil to survive. Draw lines to match the earthworms "need" on the left with the "soil condition" in the middle and the "explanation" on the right. NEED SOIL CONDITION EXPLANATION temperature organic matter sense a predator, like a mole or bird, nearby food carry vibrations food comes from organic nutrients found in soil breathing moist soil heat and light cause dryness, if skin dries worm suffocates feel dark & cool skin must be moist to absorb oxygen DIG DEEPER—Mysteries in the soil—National Association of Conservation Districts (NACD) www.nacdnet.org Stewardship & Education © 2013 .

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TEST YOUR TASTE Featuring a “Class Experiment” and “Try Your Own Experiment” TEACHER GUIDE
NEUROSCIENCE FOR KIDS http://faculty.washington.edu/chudler/neurok.html OUR CHEMICAL SENSES: TASTE TEST YOUR TASTE Featuring a “Class Experiment” and “Try Your Own Experiment” TEACHER GUIDE WHAT STUDENTS WILL DO · predict and then determine their ability to identify food samples by taste alone (holding the nose) and then by taste plus smell · collect all class data on identifying food samples and calculate the percentage of correct and incorrect answers for each method (with and without smell) · list factors that affect our ability to identify substances by taste · discuss the functions of the sense of taste · draw a simple diagram of the neural “circuitry” from the taste receptors to the brain · learn how to design experiments that include asking specific questions, defining control conditions, and changing one variable at a time · devise their own experiments to extend the study of the sense of taste SUGGESTED TIMES for these activities: 45 minutes for discussing background concepts and introducing the activities; 45 minutes for the “Class Experiment;” and 45 minutes for “Try Your Own Experiment.” 1 SETTING UP THE LAB Supplies For the Introduction to the Lab Activities Taste papers: control papers sodium benzoate papers phenylthiourea papers Source: Carolina Biological Supply Company, 1-800-334-5551 (or other biological or chemical supply companies) For the Class Experiment Food items, cut into identical chunks, about one to two-centimeter cubes. Food cubes should be prepared ahead of time by a person wearing latex gloves and using safe preparation techniques. Store the cubes in small lidded containers, in the refrigerator. Prepare enough for each student group to have containers of four or five of the following items, or seasonal items easily available.
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