Thursday, 17 January 2019

Why are leaves green?

Chlorophyll is the pigment  in  leaves. Chlorophyll works by absorbing sunlight and turning it in to energy for the plant. 
We can better understand chlorophyll by extracting/removing it from leaves. 
This will show us what the true colour of the leaf is, which they can also see in autumn just before the leaves fall off trees.

Sunday, 23 December 2018

How animals survive the winter

We want to show how blubber keeps animals warm.
We fill a container with ice cubes and water then in a plastic bag some vegetable oil and cotton.
Finally we put both hands, one in the oil and one into the ice water.
They all agreed that one hand was freezing and their hand in the oil was warm.

Friday, 9 November 2018

Cool things to look at with a microscope

We did a workshop today about using simple microscopes to see a variety of biological, chemical and physical objects.  Here is a link to the slides.

Link:  Ideas Powerpoint Show

We looked at things like plant cells, pond creatures, crystals, material, micrometeorites and LCD screens.

We also looked at some ideas for experiments for younger children.  I have posted the links to ppt documents in case you want to translate them into Spanish.  They relate to the activities in the powerpoint show above.
Infantil/Primaro worksheets/fichas 1
Infantil/Primaro worksheets/fichas 2
Parachute men, cabbage jelly, flying seeds, sunlight energy, puddles, fast cars, floating boats, robotics and different materials.  I hope these are useful!

Hoy hicimos un taller sobre el uso de los microscopios del cole para ver una variedad to coses biológicas, químicas y físicas.  Aquí es un link para las diapositivas:
Miramos a los células de una planta acuática, bichos del agua del Arroyo de Valdelatas, cristales de sal, tela, micrometeoritos y como funcionen las pantallas LED.
Para los de infantil y primero de primaria, incluye algunos experimentos con fichas.  Arriba son las fichas en inglés en powerpoint si quieres traducirles. 
Son sobre:
Construir paracaídas
Gelatina que cambiar color con pH
Semillas que vuelen
La energía del sol
¿A dónde van los charcos?
Rampas con coches
¿Cuántos canicas para hundir un barco?
Robótica súper sencilla
Y Propiedades de materiales.
¡Espera que sean útiles!
 Un saludo

Saturday, 20 October 2018

Worksheets to challenge all levels

Hello All,
I've not forgotten about my Blog, I've just been very busy at work and I teacher older children.  I have however continued writing and I have become a big fan of Level Assessed Tasks.  Here is one for early secondary that I have written:
Link to pdf:  Particles and phase changes
Here is another more sexto one: from TES:
Related image
I think they are great because students can choose how much or how little they do and they are really easy to grade, just tick off the parts that they have done.  If you have any requests, I am now very fast at writing these.

There are loads of this style of task worksheet available on the internet.

Tell me what you think.

Monday, 23 April 2018

Magic Milk Experiment

Milk is made up of minerals, proteins and fats. When the dish soap enters the milk,  the fat begins to break up. The soap molecules run around and try to attach to the fat molecules in the milk.
The fat and proteins are super sensitive to changes in the milk and so when the dishwashing liquid is added a chemical reaction occurs. The soap and fat work  to join together, which causes the movement.
Normally this process would be invisible to you, but the food coloring helps you to see all of the movement taking place.

Thursday, 5 April 2018

Why are some coins magnetic?

Coins were traditionally made from a bronze alloy of copper, tin and zinc. 
Lately, they have been made from copper-plated Steel; so the new copper-plated steel coins  are attracted to magnets. The iron content in the steel core is what makes them magnetic.

Wednesday, 14 March 2018

Can rocks float?

Not all rocks sink.
Pumice floats on water because it´s formed due to quick cooling of lava on the Earth Surface.
It has many holes in it (gases trapped inside when it was being formed.)
It is full of bubbles and it has less density.