By Janice VanCleave
How lengthy is the world's longest earthworm? How tall used to be a brachiosaurus? what is the general diameter of human hair? what is the circumference of the earth on the equator? you can now detect the solutions to those and different attention-grabbing questions on math. filled with illustrations, Math for each child makes use of easy difficulties and actions to educate you approximately measurements, fractions, graphs, challenge fixing, and masses extra! utilizing actions that relate math to daily life, this publication may help you're feeling ok with math--right from the beginning. you are going to make a solar clock, create a thermometer from a straw, race a paper boat, develop your personal bean plant, or even play a online game of ring the bottle. all the many difficulties and actions is damaged down into its function, an inventory of fabrics, step by step directions, anticipated effects, and a simple to appreciate rationalization. each task has been pretested and will be played effectively and inexpensively within the lecture room or at domestic. additionally on hand during this sequence from Janice VanCleave: Astronomy for each child Biology for each child Chemistry for each child Dinosaurs for each child Earth technological know-how for each child Geography for each child Geometry for each child The Human physique for each child Physics for each child
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Extra resources for Janice VanCleave's math for every kid: easy activities that make learning math fun
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68 in. 2 cm 2. The length of the rope equals the radius of the circle, and the distance traveled by the ball in one turn equals the circumference of the circle. English Radius = 80 in. Diameter = 2à 80 in. = 160 in. 14à 160 in. 4 in. 14à 400 cm =1256 cm 3. The distance traveled by a point on the edge of the record in four turns is equal to four times the circumference of the record. 5 in. 5 in. = 11 in. 14à 11 in. 54 in. 54 in. 16 in. 68 cm  < previous page < previous page 62 page_65 page_66 next page > next page > 63 Page 66 11 Area of Rectangles and Squares Purpose To find the area of a rectangle or square using the formula A = Là W.
A. English Diameter   = 4 in. 14à 4 in. 56 in. 4 cm 1. b. English Radius = 3 in. Diameter = 2à 3 in. = 6 in. 14à 6 in. 84 in. 1 cm Exercises 1. Determine the circumference of a circle with a. A diameter of 10 in. (25 cm)  57 58 < previous page < previous page page_61 page_62 next page > next page > Page 62 b. A radius of 6 in. (15 cm) 2. A child is swinging an 80-in. (200-cm) long rope. How far does the ball attached to the end of the rope travel in one complete turn? 3. 5 in. (14 cm). How far does a point on the edge of the record travel in four turns?
2 in. 2 Metric A = Lengthà Width   = 10 cmà 5 cm    = 50 cm 2 Example 2 English A  = Lengthà Width     = 2 inà 4 in. 2  < previous page < previous page page_66 page_67 next page > next page > 63 64 Page 67 Metric A = Lengthà Width    = 10 cmà 5 cm    = 50 cm2 When two units are multiplied, such as ftà ft, a small 2 is placed to the upper right of the unit, ft2, and the combination is read as square feet. 2 m) wide, what is the desk's surface area? 04 m2 Exercises 1. What is the area of the bulletin board?