Online Writing Lab at Purdue University
Purdue University Owl: Editing and Proofreading Strategies for Revision
This lesson contains strategies for proofreading your assignments. Use the links on the left for a step-by-step method for proofreading and editing for grammar and mechanics. CCSS.ELA-Literacy.CCRA.W.5
BBC
Bbc: Gcse Bitesize: Crude Oil, Hydrocarbons and Alkanes
Crude oil is a finite resource. Petrol and other fuels are produced from it using fractional distillation. Cracking is used to convert long alkanes into shorter, more useful hydrocarbons. Links are provided for a video and a test.