Example of a wedge. Cutting wood

This is a wedge:

Source: https://www.dreamstime.com/

 

The real name in Spanish is “Astilladora hidráulica” it’s connected to the engine of the back part of the tractor using the engine power.

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Simple machines. 3ºEP Diagram

 

JOBS

SOURCE:https://es.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Jobs_and_occupations/Jobs_ix146ot

 

Renewable and non renewable energies. Lesson Diagram

 

Archimedes and explanation of why a ship floats

Why do you think you can float, check this image and watch these two videos to understand this simple principle.

Some of the Archimedes inventions

ARCHIMEDES SCREW.

 

Archimedes Principle 4°EP

This is the video we did in our class. The idea is that you check the amount of water (VOLUME) displaced when we introduce the glass with rocks. Depending on the weight of this glass if the volume is the same than upthurst the glass will float.

The second time when I introduce more rocks the volume and the weight of the glass is practically the same, it’s close to sink.

Archimedes Principle. Check volume displaced¿? It's a balance force WEIGHT = UPTHRUST #Forces It depends on stones we add inside the glass pic.twitter.com/9pMeQ37NOA

— Nacho Herrero (@nachohs) January 27, 2017

This is a cargo being loaded. You can see the amazing control of the weight in this huge ships.

 

Pulleys and simple machines. 4º

Our 4th year students are enjoying the fantastic simple machines  6th years boys did last week.

Their pulleys and levers can show us how effort or resistance work in these simple machines.