The Amazing Math Journey

Volume Three: A Treasury of Knowledge

(Answer Key)

Chapter 1 What Is a Lebombo Bone?

(1) C

(2) D

(3) Lebombo Bone

(4) ,

Chapter 2 The Association between “Sun” and 1

(1) ,

(2) ,

(3) C

Chapter 3 The Inca’s “Quipu”

(1) C

(2) Quipu

(3) ,

Chapter 4 How to Use Knots to Keep Records?

(1) B

(2) C

(3) ,

Chapter 5 Who Deciphered the Ancient Egyptian Hieroglyphs?

(1) C

(2) Jean-Francois Champollion

(3) ,

Chapter 6 “Papyrus” Is Not Real Paper

(1) D

(2) C

(3) ,

Chapter 7 Who Invented the Number 0?

(1) C

(2) Ancient Indians

(3) ,

Chapter 8 Are Pyramids Only in Egypt?

(1) B

(2) Kukulkan Pyramid

(3) ,

Chapter 9 The Ancient and Mysterious Cuneiform Writing

(1) C

(2) A

(3) ,

Chapter 10 Does the “Hanging Gardens” Really Float in the Air?

(1) D

(2) Hanging Gardens

(3) ,

Chapter 11 How Were Roman Numerals Invented?

(1) C

(2) Ⅰ, Ⅴ, Ⅹ, L, Ⅽ, D, Ⅿ

(3) ,

Chapter 12 World Architectural Wonder—the Colosseum

(1) B

(2) Flavian Amphitheater

(3) ,

Chapter 13 Can Counting Rods Be Used to Calculate Negative Numbers?

(1) C

(2) red ink (deficit)

(3) ,

Chapter 14 Colorful Terracotta Army

(1) B

(2) Environmental change

(3) ,

Chapter 15 Why Does the Sun Rise in the East and Set in the West?

(1) A

(2) earth rotates from west to east

(3) ,

Chapter 16 The Origin of the Name of Sanxingdui

(1) B

(2) Ancient Shu

(3) ,

Chapter 17 Why Does the Moon Phase Keep Changing?

(1) B, D

(2) the new moon

(3) ,

Chapter 18 Why Can’t We See the Dark Side of the Moon?

(1) D

(2) tidal locking

(3) ,

Chapter 19 Astronomical Seasons and Meteorological Seasons

(1) D

(2) 22

(3) ,

Chapter 20 Where Does the Sun Never Set?

(1) C

(2) A

(3) ,

Chapter 21 Why Is a Quarter of 1 Hour Called 15 Minutes?

(1) B

(2) A, B

(3) ,

Chapter 22 What Time Is “San Geng Banye”?

(1) A

(2) geng

(3) ,

Chapter 23 Why Do Clock Hands Rotate in a Clockwise Direction?

(1) C

(2) the sundial needle

(3) ,

Chapter 24 Which Countries Have the 12 Zodiac Signs?

(1) B

(2) 2036

(3) ,

Chapter 25 How Many Constellations Are in the Sky?

(1) C

(2) Ptolemy

(3) ,

Chapter 26 The Brightest Star in the Night Sky

(1) B

(2) Sirius

(3) ,

Chapter 27 Where Will a Compass Point to at the South Pole?

(1) A, D

(2) about 11°

(3) ,

Chapter 28 Can Magnets Fail?

(1) C

(2) Pierre Curie

(3) ,

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