You can help your child train his / her fine motor skills, mathematical concepts, visual perception skills, and nurture their language development at home by just integrating them into every day family life:
1. Let your child help you out with everyday chores like the preparation of food (fine motor skills are trained during peeling and cutting, mixing, cracking open an egg, etc), setting the table (mathematical concepts like numbers and quantities are trained by figuring out how many people need how many things, etc.), folding laundry or finding pairs of socks. And last but not least, you can let them pick the things they want to wear themselves and let them dress on their own - in sports class they have to be able to do it on their own too.
2. Help your child enrichen their vocabulary by talking about everyday life and all sorts of situations with them. Point out new things and name them. If your child uses the wrong word or makes a grammar mistake, don't stress the mistake, but instead continue your conversation by picking up what they said and stating it in the correct way. Also for bilingual families, studies show that it is important to finish your train of thought and sentence in one language before switching to the other one. Rather than letting them watch TV, let them listen to stories on tape/CD or read them a book. Just 20 minutes of story reading time per day gets young children in touch with story structures and literacy and it makes an important contribution to reading comprehension and vocabulary.
3. Also, if they are drawing or writing letters or numbers at home to show you what they have learned in school, please remind your children of their pencil holding technique, make sure they use the correct three finger method and the fingers don't slip around the pencil in a fist grip. It is essential to train those skills at home as well, in one-on-one situations. This is the most important skill they need to acquire to have a successful start to their school career. So instead of letting them paint or draw on the iPad, let them use real textures and a variety of real utensils and different mediums.