Practice: coding and research

Las preguntas de esta práctica

Puedes leerlas antes de empezar, hacerlas en un papel o repasarlas después. Cada una tiene su solución explicada.

1. 1 · Binary code

   What is binary code made of?

   The computer's own language.

   • a) Strings of 0s and 1s
   • b) Letters from A to Z
   • c) Pictures and colours
   • d) Musical notes
   Ver la solución

   Respuesta: a) Strings of 0s and 1s

   Binary code is made of strings of 0s and 1s.

2. 2 · Programs

   What is a program?

   Think of the robot on the grid.

   • a) A set of instructions that tells a computer what to do
   • b) A type of screen
   • c) A website
   • d) A password
   Ver la solución

   Respuesta: a) A set of instructions that tells a computer what to do

   A program is a set of instructions for a computer.

3. 3 · Coding

   Which of these needs a program to work?

   Does it have a computer inside?

   • a) A traffic light
   • b) A pencil
   • c) A wooden chair
   • d) A book
   Ver la solución

   Respuesta: a) A traffic light

   Traffic lights, washing machines, phones and laptops all need programs.

4. 4 · Write a program

   The robot is at the bottom-left. Drag the missing instruction

   Up two squares, right three squares, then…

   up 2 → right 3 → ____

   Fichas: up 1 · down 2 · left 3 · right 1

   Ver la solución

   Respuesta: up 1

   After going up two and right three, one more square up reaches the apple.

5. 5 · Programming languages

   Which programming language is made for kids?

   You join coloured blocks.

   • a) Scratch
   • b) C++
   • c) Binary
   • d) English
   Ver la solución

   Respuesta: a) Scratch

   Scratch is a programming language for kids; C++ is used by professional programmers.

6. 6 · Robotics

   What are the two jobs of a robotics scientist?

   Match each step with what it means.

   1. First job
   2. Second job
   3. Automatically

   • a) Build the machine
   • b) Without being told each time
   • c) Write the program
   Ver la solución

   Respuesta: First job → Build the machine · Second job → Write the program · Automatically → Without being told each time

   Robotics scientists build the robot and write the program that tells it how to do its job.

7. 7 · Research

   What does 'reliable' mean?

   A key word for research.

   • a) Something you can trust and believe
   • b) Something very old
   • c) Something very fast
   • d) Something funny
   Ver la solución

   Respuesta: a) Something you can trust and believe

   Reliable information is information you can trust.

8. 8 · Research

   Which website is usually more reliable?

   Think about who wrote it.

   • a) A museum's .org website
   • b) A stranger's blog
   • c) A chat message
   • d) An advert
   Ver la solución

   Respuesta: a) A museum's .org website

   Websites of organisations, schools, universities and museums are usually more reliable.

9. 9 · Research

   You find an interesting fact online. What should you do next?

   One of the three rules.

   • a) Check that other reliable websites say the same
   • b) Share it straight away
   • c) Believe it because it is online
   • d) Copy it without reading
   Ver la solución

   Respuesta: a) Check that other reliable websites say the same

   Look at several websites to check the information.

10. 10 · Blogs and chats

    Why should you be careful with blogs and chats?

    Who writes there?

    • a) People write their own opinions, which may not be true
    • b) They are always wrong
    • c) They are only for adults
    • d) They have no words
    Ver la solución

    Respuesta: a) People write their own opinions, which may not be true

    Blogs and chats show people's opinions; they don't have to be true.