20 pictures of items which are generally known by different names in the UK and US. I have 40 students, 2 to a desk so I print out each picture A4 and put one on each desk. Print out and cut up the names then hand one out to each student. They have to stand up and try to find/guess the correct picture and sit at that desk. Then run through the powerpoint eliciting the correct answers where possible. I did that as part of one lesson and then did the wordsearch handout as a review in the next lesson. Just ran through the powerpoint again eliciting the vocab, they have to write it down to reinforce. Then get them to do the wordsearch, if you have a smartboard pull up an image of the handout on the screen and use whatever software you have that lets you write over it. I did make an image which was better fitted to the screensize but I think I deleted it. Tell the students they have to find all 40 words as a class, and to come up when they find words and mark them off on the screen, ticking the relevant box as they find the words. You can call and repeat each word as it's crossed of, or periodically do a rundown of which words they're yet to find.