1) Diameter a) the amount of something in a particular space or area b) a straight line that goes from one side of a circle to the other side and through the centre c) something that you hear or that can be heard 2) Pyramid a) a shape with a square base and four triangular sides that meet to form a point at the top b) the area of a surface or of all of the outer surfaces of something c) a number less than 1, such as 1/2 or 3/4 3) Surface area a) relating to the middle number or amount in a series b) a shape with four equal sides and four 90° angles c) the area of a surface or of all of the outer surfaces of something 4) Density a) the amount of something in a particular space or area b) scientific equipment that uses lenses to make very small objects look bigger c) the process in which your body changes food in your stomach into substances that it can use 5) Sound a) cycle of life b) something that you hear or that can be heard c) periodic table of chemical elements 6) Fractions a) a number less than 1, such as 1/2 or 3/4 b) blood circulation c) an animal that feeds its babies on milk from its body 7) Median a) a shape with four equal sides and four 90° angles b) scientific equipment that uses lenses to make very small objects look bigger c) relating to the middle number or amount in a series 8) Square a) the process in which your body changes food in your stomach into substances that it can use b) a shape with four equal sides and four 90° angles c) the amount of substance that something contains 9) Microscope a) an animal that feeds its babies on milk from its body b) the process of keeping things clean c) scientific equipment that uses lenses to make very small objects look bigger 10) Mammals a) the process in which your body changes food in your stomach into substances that it can use b) an animal that feeds its babies on milk from its body c) decimal numbers/part 11) Digestion a) the process in which your body changes food in your stomach into substances that it can use b) how hot or cold something is c) a living thing, often one that is extremely small 12) Hygiene a) a mathematical statement that shows two amounts are equal using mathematical symbols b) light c) the process of keeping things clean 13) Temperature a) the quality of being hot or warm b) a change of position or place c) how hot or cold something is 14) Equation a) a mathematical statement that shows two amounts are equal using mathematical symbols b) the quality of being hot or warm c) adding numbers 15) Mass a) to take a number away from another number b) a change of position or place c) the amount of substance that something contains 16) Organism a) any of the numbers from 0 to 9 b) Straight line c) a living thing, often one that is extremely small 17) Movements a) a shape with four 90° angles and four sides b) liquid substances c) a change of position or place 18) Light a) the quality of being symmetrical b) the brightness that shines from the sun, from fire, or from electrical equipment, c) a usually hard, shiny material such as iron 19) Heat a) the quality of being hot or warm b) a shape with four 90° angles and four sides c) the quality of being symmetrical 20) Addition a) adding numbers b) to take a number away from another number c) liquid substances 21) Digit a) a usually hard, shiny material such as iron b) any of the numbers from 0 to 9 c) Straight line

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