Machines Then and Now

THE WORLD OF SCIENCE & TECHNOLOGY

---

Robert Quinn

---

CEFR A1 — A2
Word count 1,663

---

Read and discover all about machines in the past and today.

• When did people invent the wheel?
• What is a nanobot?

 

---

ISBN 9780194022088
Activity Book 9780194644471

Buy Paperback