My Dinosaur Book of Bonds to 20 - This book follows My Bug Book of Bonds to 10. It offers a systematic approach to mastering basic number facts and is arranged in such a way that pupils learn to recognise number patterns. By learning, practising and understanding the number combinations to 20, the learners are able to build up and master basic number facts. This is imperative for their understanding of numeracy. The use of blocks enables the learners to write the numbers correctly and neatly. Learners can work out the answers by counting the number lines at the top of each page if they need a little extra help.