Credits and Acknowledgements: Photography:

Images – Math

• Abacus, © Getty Images, Inc.
  (Grade 4/Unit 2)

• Around the Fish (Um den Fisch), Paul Klee, 1926, oil on canvas, 46.7 × 63.8 cm., The Museum of Modern Art (MoMA), New York (photograph). Abby Aldrich Rockefeller Fund , © 2001 The Museum of Modern Art, New York
  (Grade 3/Unit 9)

• Baseball stadium, © Getty Images, Inc.
  (Grade 5/Unit 10)

• Big numbers, © Getty Images, Inc.
  (Grade 5/Unit 15)

• Bingo balls, © Lawrence Manning/Corbis
  (Grade 5/Unit 6)

• Bottles of juice, © Getty Images, Inc.
  (Grade 4/Unit 11)

• Butterfly, © Getty Images, Inc.
  (Grade 3/Unit 9)

• Carrot illustration, © Getty Images, Inc.
  (Grade 4/Unit 13)

• Cash register, © Getty Images, Inc.
  (Grade 4/Unit 4)

• Chocolate," © Getty Images, Inc.
  (Grade 3/Unit 5)

• Clock, © Getty Images, Inc.
  (Grade 4/Unit 13)

• Clover, © Getty Images, Inc.
  (Grade 3/Unit 9)

• Cone egg block, © Getty Images, Inc.
  (Grade 5/Unit 12)

• Dollar bill montage, © Getty Images, Inc.
  (Grade 4/Unit 14)

• Dome windows, © Getty Images, Inc.
  (Grade 4/Unit 19)

• Dragonfly, © ImageState
  (Grade 3/Unit 9)

• Earth from Space, © Getty Images, Inc.
  (Grade 5/Unit 5)

• Elephant, © Getty Images, Inc.
  (Grade 4/Unit 4)

• Falling dominos, © Getty Images, Inc.
  (Grade 4/Unit 5)

• Ferris wheel, © Getty Images, Inc.
  (Grade 4/Unit 7)

• Flash cards, © Getty Images, Inc.
  (Grade 3/Unit 4)

• Flasks and beakers, © Mark Karrass/Corbis
  (Grade 5/Unit 14)

• Fractions graphic, © Getty Images, Inc.
  (Grade 3/Unit 12)

• Fruit cups, © Getty Images, Inc.
  (Grade 3/Unit 11)

• Geese, © Getty Images, Inc.
  (Grade 5/Unit 4)

• Geese, © Getty Images, Inc.
  (Grade 5/Unit 7)

• Girl writing on chalkboard, © Getty Images, Inc.
  (Grade 5/Unit 2)

• Group of starfish, © Getty Images, Inc.
  (Grade 5/Unit 5)

• Handful of strawberries, © Getty Images, Inc.
  (Grade 4/Unit 8)

• Hot dog, © Getty Images, Inc.
  (Grade 5/Unit 10)

• Mallards, © ImageState
  (Grade 4/Unit 20)

• Maps and charts, © Getty Images, Inc.
  (Grade 4/Unit 12)

• Marbles, © Getty Images, Inc.
  (Grade 3/Unit 6)

• Measuring tape, © Getty Images, Inc.
  (Grade 3/Unit 7)

• Metro rail transit, © Getty Images, Inc.
  (Grade 4/Unit 10)

• Monkey in rainforest (reuse), © Getty Images, Inc.
  (Grade 4/Unit 20)

• Multiberries, © Getty Images, Inc.
  (Grade 3/Unit 2)

• Multiple cars in lot, © Getty Images, Inc.
  (Grade 4/Unit 6)

• Number montage, © Getty Images, Inc.
  (Grade 4/Unit 15)

• Number sign dice, © Scott Speakes/Corbis
  (Grade 5/Unit 10)

• Number sign montage, © Getty Images, Inc.
  (Grade 5/Unit 11)

• Numbers on marquee, © Getty Images, Inc.
  (Grade 5/Unit 1)

• Numbers/machine montage, © Getty Images, Inc.
  (Grade 4/Unit 16)

• Owl, © Corbis
  (Grade 3/Unit 9)

• Panda bear, © Warren Jacobi/Corbis
  (Grade 4/Unit 20)

• Parade, Jacob Lawrence, Hirshhorn Museum and Sculpture Garden, Smithsonian Institution, Gift of Joseph H. Hirshhorn, 1966.  Photograph by Lee Stalsworth, © Hirshhorn Museum and Sculpture Garden, Smithsonian Institution, Washington, DC
  (Grade 3/Unit 9)

• Percent sign, © Getty Images, Inc.
  (Grade 4/Unit 20)

• Pink daisy, © Getty Images, Inc.
  (Grade 5/Unit 10)

• Produce stand, © Getty Images, Inc.
  (Grade 5/Unit 9)

• Protractor/measurement tools, © Getty Images, Inc.
  (Grade 4/Unit 17)

• Red flowers, © Getty Images, Inc.
  (Grade 5/Unit 10)

• Register/receipt tape, © Getty Images, Inc.
  (Grade 5/Unit 8)

• Rose, © Getty Images, Inc.
  (Grade 5/Unit 10)

• Row of chairs, © Getty Images, Inc.
  (Grade 4/Unit 1)

• Row of weights, © Getty Images, Inc.
  (Grade 5/Unit 3)

• Rows of candy jars, © Getty Images, Inc.
  (Grade 4/Unit 9)

• Rugby players, © Getty Images, Inc.
  (Grade 4/Unit 3)

• Rulers, © Corbis
  (Grade 5/Unit 13)

• Sand dollar, © Getty Images, Inc.
  (Grade 3/Unit 9)

• Spider, © Getty Images, Inc.
  (Grade 3/Unit 9)

• Squirrel with nuts, © Getty Images, Inc.
  (Grade 3/Unit 3)

• Stack of boxes, © Getty Images, Inc.
  (Grade 4/Unit 18)

• Stars, © Getty Images, Inc.
  (Grade 3/Unit 14)

• Strawberries, © Getty Images, Inc.
  (Grade 3/Unit 8)

• Sunflowers, © Getty Images, Inc.
  (Grade 3/Unit 1)

• Swirl, © Getty Images, Inc.
  (Grade 5/Unit 12)

• Taj Mahal, © Getty Images, Inc.
  (Grade 3/Unit 9)

• Tiger, © Getty Images, Inc.
  (Grade 3/Unit 9)