Resources by Twig

Plant Transport *suitable for home teaching*

This film, from Twig World, explores how plants transport resources via the xylem and phloem. The key points made in the the film are: •Transpiration is the evaporation of water from leaves into the atmosphere. •It causes water to be sucked up from roots to the leaves. •Water enters the roots from the soil by...

Plants and Medicine

This film, from Twig World, explores how artichokes, garlic and poppies play an important role in medicine, for pain management and the treatment of disease.

The key points made in the film are:

•The medicinal properties of plants have saved countless lives. •Over half of prescription drugs use...

Plants and Medicine: Aspirin *suitable for home teaching*

This film, from Twig World, looks at the history of aspirin, which can be traced back to the Egyptians, where it comes from and what makes it so special. The key points made in the film are: •Aspirin originates from an ancient plant remedy used by the Egyptians. •They chewed willow bark to relieve pain and fever...

Plastics and Polymers *suitable for home teaching*

This film, from Twig World, looks at how plastics are made and how they can be manipulated to have very different functions. The key points made in the film are: •Plastics are synthetic materials called polymers. •Polymers are made of small molecules called monomers obtained from crude oil. •The plastic's...

Predicting Volcanic Eruptions

This film, from Twig World, looks at how scientists can predict volcanic activity using seismology to monitor lava patterns deep underground.

The key points made in the film are:

•Scientists use seismology to predict an eruption. •A "long-period event" involves pressure slowly building up before an...

Recycling Plastics *suitable for home teaching*

This film, from Twig World, looks at the differences between thermosetting, thermo softening and partially biodegradable plastics, and how they can be recycled.

The key points made in the film are:

Rounding: Snails Vs Rockets

This video, from Twig World, explains how we are able to measure extremes of speed, from incredibly fast to extremely slow. The degree of accuracy required when taking these measures needs to be decided. This is achieved by rounding. Examples of unhelpful rounding are given and the need for the notion of...

Scale of the Universe

This film, from Twig World, looks at how big the universe is.

The key points made in the film are:

•The Universe is constantly expanding.

•The Universe is already billions of light years across.

•Our Solar System is part of the Milky Way galaxy.

•Beyond our galaxy lie many more...

Speed of the Earth

This video, from Twig World, explains that the planet earth is constantly moving through space and models the Earth’s orbit as a circle in order to approximate the distance travelled in one year and hence estimate the distance the Earth travels every second. The video is accompanied by a lesson plan and a...