1. Have the beam projector ready to  play the video

suggested in the “Materiales Educativos Digitales” section and download and print the crossword puzzle suggested as well.  

2, Ask students what type of simple machines they have at home. If they don’t remember what simple machines are, you may explain briefly and move on with the next activity.

3. Ask students to look around the classroom and find out some simple machines.

4. Tell students they are going to learn or review 6 simple machines : lever, wheel and axle, pulley, inclined plane, wedge and screw.

5. Ask students to work in pair and take notes on each one of the simple machines in the video. You may suggest they write the 6 names on top of the page, making columns and record the keywords there.

6. Play the video and make pauses after each simple machine mentioned for students to take notes.

7. Invite students to exchange information with another pair of students.

8. Tell students they are going to practice vocabulary you recommend they learn so they are able to read and talk about simple machines.

9. Give students an example by reading the first definition (#1) and ask them to guess what the object is.

10. Distribute the worksheet and ask students to work in pairs.

11. Monitor the activity and help students with vocabulary.

12. Invite students to exchange their crossword puzzled with another pair and correct or provide the missing answers.

13. Finally, use the definitions in the puzzle to ask questions to students, such as, what’s a wedge used for cutting food?, or how do you call the pulleys used to raise the sailboat?, etc.

1. Have the beam projector ready to show students the video suggested in the “Materiales Educativos Digitales” and download the file as well for the second activity.

2. Ask students who Archimedes was and what he’s famous for.

3. Mention ‘lever’ and associate it with Archimedes.

4. Divide the video intro three main parts: Archimedes, the lever, how it works and ask students to write these three headings in their notebooks to take notes.

5. Play the first part of the video and discuss the information with students, repeat the same procedure with the other two parts.

6. Monitor the activity and offer help with grammar and vocabulary as needed.

7. When the video is finished, ask students to write three questions using the information they got from the video.

8. Invite students  to ask their questions and have some other students answer.

9. Download the file and make copies for students. This is perfect worksheet to work with right after students have watched the video on Archimedes.

10. Tell students they are going to practice classifying the different types of levers. If necessary you may want to review them again.

11. Distribute the worksheet and use object #1 as an example: Nail clippers are a Class 2 Lever. They are a class 2 lever because the fulcrum is in between the load and the effort/force

12. Help with grammar and vocabulary as needed.

13. You may want to set  a time limit and if students are not finished yet, ask them to sit in pairs for 5 or 7 more minutes and try to finish the activity.

14. Finally, check answers with the class by asking pairs of students read their answers and correct if necessary.

1. Download the files suggested in the “Materiales Educativos Digitales” section  and make copies for students.Have the beam projector ready to show the video in the next activity.

2. Tell students they are going to learn about different types of pulleys.

3. Ask students what the advantages of using a pulley are. Ask for simple and concrete examples.

4. Play the video, the first part shows what a machine is and what a simple machine is. The rest of the video is about how pulleys work and the different types there are so decide on how you want to show the information, by pausing the video several times or simply by diving it into two halves.

5. Ask students not to take notes but to draw pictures and label them.

6. Monitor the activity and offer help with grammar and vocabulary.

7. Invite students to form groups of three and exchange their drawings to learn from their classmates.

8. Ask volunteers in groups of three to use their drawings and explain the class how a pulley works. One of the volunteers mime the actions in the explanation.

9.Handout the wordsearch and ask students to read the definition of pulley and its parts.

10. Help with vocabulary.

11. Ask students to do the first part of the activity individually and check answers with the class.

12. Invite students to work in pairs and answer the second part of the activity: find where the effort is to create the lift or lowering.

13. Finally, ask some volunteers to explain that process and invite the rest of the class to contribute with their ideas and comments.