Mae'r pynciau yn y llyfr hwn yn helpu disgyblion i ddeall prosesau bywyd a phethau byw. Maent yn atgyfnerthu dulliau ymchwil gwyddonol drwy fynnu bod disgyblion yn cynllunio ac yn gwneud gweithgareddau ymarferol, ystyried tystiolaeth, a chyfl wyno syniadau a chasgliadau. Mae'r tafl enni yn canolbwyntio ar brosesau bywyd sy'n gyffredin i bopeth byw, pobl ac anifeiliaid eraill, planhigion gwyrdd, yn ogystal a sut mae pethau byw yn cysylltu a'u hamgylchedd. The topics in this book help pupils understand life processes and living things. They reinforce methods of scientifi c enquiry by requiring pupils to plan and carry out practical activities, consider evidence, and present ideas and conclusions. The sheets focus on life processes common to all living things, humans and other animals, green plants, as well as on how living things relate to their environment. The three books in the Brilliant Support Activities Science series are an ideal way of introducing scientific terms in Welsh. The books are designed to develop the essential skills of observation, predicting, recording and drawing conclusions. The books contain a mixture of paper-based tasks and ‘hands on’ activities. The reproducible worksheets introduce one concept or statement per sheet (unless they are review sheets), and they can be used in any order. They are designed for use by individual pupils or to be used as a class activity if all the class are working at the same ability range.