Listing all results (1870)

Photosynthesis and Leaf Adaptation: How Sun and Shade Plants Respond to Light

In this practical investigation, students measure the rate of photosynthesis in plants from different habitats (sun and shade), and then consider what this demonstrates about leaf adaptation.When leaf discs are immersed in a sodium hydrogen carbonate solution (a source of carbon dioxide) and illuminated, the oxygen...
Publication date:
2000 - 2009

2 files

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Cauliflower Cloning

This video introduces a reliable technique to demonstrate tissue culture and totipotency, and shows how best to use this protocol with your students.Unlike animal cells, many plant cells are totipotent, meaning that each cell has the capacity to regenerate the entire plant. Micropropagation is the regeneration of...
Publication date:
2010 to date

4 files

1

5
Average: 5 (1 vote)

Cabomba: Investigating Photosynthesis with Bubbling Pondweed

This resource describes the use of Cabomba to investigate the effect of light intensity in photosynthesis. The video demonstrates how best to use this protocol with students in the lab, supported by student sheets with four different investigations, technical notes and full teachers' notes.The bubbles from the...
Publication date:
2010 to date

3 files

1

5
Average: 5 (1 vote)

Algal Balls - Photosynthesis Using Algae Wrapped in Jelly Balls

This reliable practical allows students to use algae to look at the rate of photosynthesis with quantifiable and replicable results. In this protocol, the green alga Scenedesmus quadricauda is immobilised in alginate beads. Changes in the colour of hydrogen carbonate indicator solution (also called bicarbonate...
Publication date:
2010 to date

7 files

2

4
Average: 4 (1 vote)

Estimates from Limited Data

This activity can be used to provide a simple introduction to the technique of Fermi estimation. The three files contain an overview, teacher notes and a student handout.Estimates from Limited Data - Overview provides a brief outline of the activity contained within the resource.Teacher notes - Making estimations...
Publication date:
2010 to date

3 files

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0
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Fermi Estimates

This resource provides examples of solving problems using Fermi Estimates. These examples are similar to the ones covered in the resource "Estimates From Limited Data". The tasks may be suitable for group and internet access may be beneficial.Fermi estimation provides an overview of the resource.Teacher...
Publication date:
2010 to date

2 files

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Is this a Valid Argument?

The aim of this activity is to encourage discussion about the nature of relationships between variables. It provides examples of relationships where there may appear to be correlation but not necessarily a causal relationship. The task is suitable for group or individual work and internet access may be beneficial....
Publication date:
2010 to date

2 files

0

3
Average: 3 (1 vote)

Bar Codes

This resource is based on two aspects of the design of bar codes used for products on sale in shops. The first aspect is that of a check digit and how it works; the second aspect is that of the actual design for the strips of numbers that make up bar codes. This activity only deals with the left-hand side numbers in...
Publication date:
2010 to date

4 files

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Braille

This activity covers the compact method of coding used by Braille. It explores calculating the number of different patterns that exist using a 3 x 2 design.Braille design: Overview outlines the content of the resource and suggests possible approaches and extensions.Braille design: Guidance briefly outlines...
Publication date:
2010 to date

4 files

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Horse Manure Crisis

In this task students analyse a key prediction made during an environmental crisis on the streets of London; that they would be nine foot deep with horse manure within 50 years. Students research any required data, make estimates and perform calculations to determine the reasonableness of the prediction. They also...
Publication date:
2010 to date

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