Some children may need external motivation to help them complete tasks in the middle school/high school ages due to the complexity of the work, taking longer and not being seen as fun. To motivate them, you may have to use an external motivator such as video games, take breaks between activities, or allow them to take a break between different activities. Remember, you have control over the schedule.
Homeschooling allows parents to look at their children's learning styles and develop a curriculum and way of learning that will benefit them. When looking for activities or things to use during your day, consider how your child learns best. Some children are auditory or visual learners, while others are more tactile or kinesthetic learners. Figuring out your child's learning style will give you an inside look at what type of learning activities will fit and work for them, and help you develop resources to help teach them.
Getting an unmotivated student motivated can be challenging and stressful, so it is important to find a middle ground and work with them to help them feel successful in the program. Motivating the unmotivated child can be helped with simple changes and speaking to them about what will get them to learn more effectively. Homeschooling is about giving students the best possible option to succeed in a way that is right for them.