CLEAPSS Supporting practical science and technology
Welcome to the new CLEAPSS Science Website
What is CLEAPSS
CLEAPSS resources give teachers ideas for exciting and engaging practical activities that fire pupils' imaginations and then, unlike many other sources of ideas, go on to show teachers and technicians in detail how to translate the ideas into safe and exciting experiences in the classroom.
CLEAPSS advice and documentation is recognised by the Health and Safety Executive and the Department for Education.. (read more)
Flaming Bob Worley

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New Physics Courses
As noted in Bulletin 165 – please see the links below for more information about our Arduino and Practical Radioactivity courses running at CLEAPSS HQ this Summer term. 


Spam Emails
CLEAPSS have been made aware of spam purportedly coming from CLEAPSS accounts with links and / or attachments to invoices. All CLEAPSS emails are all digitally signed and any spoofed / spam emails should be rejected as fake by your mail server if it has been configured correctly, however many aren't!!

In light of this, please make sure you check that the email is from a genuine before following any links or opening attachments.

Signs of fake emails:
  • you weren't expecting the email / invoice.
  • the from email address does not match the from name.
  • phone numbers in the footer are not the CLEAPSS number ( 01895 251496 )
  • check by hovering over a link, CLEAPSS only uses WorldPay for online payments.
  • the English or grammar is poor, or amounts requested are in dollars.
If in any doubt about the authenticity of any CLEAPSS email then please contact us BEFORE opening any attachments or following any links.
CLEAPSS at ASE Conference 2019
Once again CLEAPSS had a large presence at the 2019 ASE Conference in Birmingham.

Find all the resources from our workshops and talks here.


New Edition of CLEAPSS Guide L093 - Radioactives in Schools
We have issued a new edition of L093. See Guide GL114 for a list of the changes and what you need to do. 

The main reason for the new edition was the change in the Ionising Radiations Regulations which we explained in our termly bulletins and web site earlier this year.  

If your school holds the typical radioactive sources for teaching, your employer must register the work with the Health and Safety Executive. (See guide GL258.)

However, we have also been reviewing ageing sources that schools have acquired in the past. There is convincing evidence that using Becquerel plates and radium-painted timepieces of this age can no longer be justified. 

The condition has degraded to such an extent that they can no longer be regarded as safe to use. These need to be disposed of L93 gives details of disposal. 
What does good technical support look like in a science department?
How can technicians transform a school’s science department? 

Watch this Gatsby Foundation film to understand the vital role technicians play in their school and the delivery of good practical science.

What's new.. more..

Using the CLEAPSS Conductivity indicator
This video describes the use of the CLEAPSS conductivity indicator with aqueous solutions. Only the consequence of conductivity, that is electrolysis, is mentioned in specifications by examination Boa.. more
 (16 May 2019)

PP063 - Finding the Formula of Magnesium Oxide
This practical illustrates the idea that oxygen has mass, and that burning can involve an increase in mass as an element reacts to become an oxide. The activity also introduces the idea that the relat.. more
 (1 May 2019)

Marble chip project
This video shows the use of the CLEAPSS marble chip holder. On heating calcium carbonate, it decomposes to calcium oxide which at high temperature produces light (limelight). The reaction is quantitat.. more
 (30 Apr 2019)

CLEAPSS Membership Charter
The CLEAPSS Membership Charter sets out what Associate members can expect from CLEAPSS as well as outlining the conditions of membership. This document should be read in conjuction with the CLEAPSS Co.. more
 (30 Apr 2019)

G001 - A guide to CLEAPSS services
This guide assembles, in one booklet, information about the purpose of CLEAPSS and the services it offers and is likely to be useful to members and those thinking of becoming members.
 (30 Apr 2019)