In Science, EAL learners need to understand scientific language, both written and oral, as well as to work with the command verbs such as; discuss, explain, evaluate etc… (Mertin, 2014). This means the language required for Science is academic and challenging and, as a result, it can become extremely difficult for learners to access the subject content. This begs the questions; How do we make the lessons comprehensible to EAL learners and provide what Krashen (1998) terms as ‘comprehensible input’?