The popular word game: now as a starter in your classroom. Use this as a starter on the whiteboard or as a competition between your classes through the half term. This is my bell task for all sets with a prize at the end of term for the set with the highest total score. Interactive, all pupils want to take part, good as a literacy and numeracy (calculating the scores) starter. Applicable to all subjects not just science. Includes printable tiles (I laminate mine and have sticky magnets on the back so they can work on my magnetic whiteboard). Powerpoint and PDF version included, keynote version on the jump link for OS X users - this works especially well. mrmortonscience

Great little plenary chooser that your pupils will get used to fast. I recommend picking up a few D20 dice (10 for £3 on ebay) and giving one to each group. Then when you want to check understanding either at the end or part way through a lesson they roll the dice and do the corresponding activity. Pupils enjoy having a semblance of control but you still get the required plenary. If you want a more controlled experience have one pupil roll the dice and every pupil has to do that specific plenary. Digital dice rollers are also available online.