Dorling Kindersley Ltd

1: Hola! Como estas? 2: Los numeros 1-20 3: Mi familia 4: Cuantos anos tienes 5: En mi mochila 6: Los numeros 20-69 7: Los meses del ano 8: Los adjetivos 9: Beat the clock 1 10: Los colores 11: Los dias de la semana 12: Los animales 13: La casa 14: Donde vives? 15: Los paises 16: En la ciudad 17: Donde esta...? 18: El tiempo libre 19: Que hora es? 20: Beat the clock 2 21: Mi rutina 22: La ropa 23: Que tiempo hace? 24: En la escuela 25: La musica 26: Los numeros 70-1000 27: La comida y las bebidas 28: En el cafe 29: El cuerpo 30: Las vacaciones 31: Beat the clock 3 32: Parents' notes and answers

1: Groups of 2 2: Pairs and doubles 3: Groups of 10 4: Multiplying by 100 and 1000 5: Groups of 3 6: Triple fun 7: Groups of 4 8: Shapes 9: Groups of 5 10: Telling the time 11: Beat the clock 1 12: Groups of 6 13: Bugs 14: Sports 15: Groups of 7 16: Days of the week 17: Dice and cards 18: Groups of 8 19: Solar system 20: Fractions 21: Groups of 9 22: Shopping 23: Beat the clock 2 24: Division 25: Groups of 11 26: Buildings 27: Sequences 28: Groups of 12 29: Dozen a day 30: Plants 31: Beat the clock 3 32: Parents' notes and answers

1: Perceptive pioneers 1: Aristotle 2: Greek greats 1: Pythagoras 2: Empedocles 3: Democritus 4: Euclid 5: Hypatia 4: Archimedes 5: Hippocrates 6: Zhang Heng 7: Claudius Galen 8: Al-Khwarizmi 9: Avicenna 10: Averroes 11: Fibonacci 12: Francis Bacon 2: Brilliant biologists 1: Hildegard of Bingen 2: Mary Anning 3: Seeing things 1: Alhazen 2: Roger Bacon 3: Willebrord Snell 4: Antonie van Leeuwenhoek 5: Patricia Bath 4: Robert Hooke 5: Carl Linnaeus 6: Charles Darwin 7: Gregor Mendel 8: Nettie Stevens 9: Thomas Hunt Morgan 10: Alexander Fleming 11: Franklin, Crick, and Watson 12: Inge Lehmann 13: Live James Lovelock 14: Charles David Keeling 15: Medical masterminds 1: Edward Jenner 2: Jonas Salk 3: Paul Ehrlich 4: Francoise Barre-Sinoussi 5: Joshua Lederberg 3: Clever chemists 1: Robert Boyle 2: Joseph Black 3: Joseph Priestly 4: Alessandro Volta 6: Michael Faraday 7: Louis Pasteur 8: Dmitri Mendeleev 9: Inventive chemists 1: Charles Goodyear 2: Leo Baekeland 3: Percy Julian 4: Stephanie Kwolek 5: George William Gray 10: The Curies 11: Alice Ball 12: Dorothy Crowfoot Hodgkin 13: Barbara McClintock 4: Phenomenal physicists 1: Leonardo da Vinci 2: Nicolaus Copernicus 3: Galileo Galilei 4: Johannes Kepler 5: Christiaan Huygens 6: Edmond Halley 7: Henriette Swan Leavitt 8: Isaac Newton 9: James Clerk Maxwell 10: Ernest Rutherford 11: Albert Einstein 12: J Robert Oppenheimer 13: Penzias and Wilson 14: Quantum physicists 1: James Chadwick 2: Werner Heisenberg 3: Subrahmanyan Chandrasekhar 4: Richard Feynman 5: Peter Higgs 15: Edwin Hubble 16: Vera Rubin 17: Stephen Hawking 5: Incredible inventors 1: James Watt 2: Rudolf Diesel 3: Computing creatives 1: Ada Lovelace 2: Grace Murray Hopper 3: John von Neumann 4: Anne Easley 5: Tim Berners-Lee 4: Wilhelm Rontgen 5: C V Raman 6: Nikola Tesla 7: Joseph Lister 8: Alan Turing 9: Alfred Nobel 10: Ali Javan 11: Rachel Carson 12: Communicators 1: David Attenborough 2: Carl Sagan 3: Dava Sobel 3: Bill Nye 4: Neil DeGrasse Tyson 6: Let's applaud... 7: Glossary 8: Index 9: Acknowledgments