about interest classes

Nowadays, many parents have arranged <s>some </s>interest classes for their children which <s>is</s> are oriented to enriching their lives and <s>makes a</s> to give them a head start.

These interest classes take too much away from the children's time for rest and entertainment, leaving them exhausted. That is where the problems lies.

It's true that some of the children are eager to learn more, but the majority of them would prefer to have some leisure with their families rather than attend a interest class. A traditional proverb states that "All work and no play makes Jack a dull boy"

Thus, I doubt that such a course can enlighten the children's learning desire, let alone foster their overall development.

this is an abstract of my scientific paper. could you help me revise it ？

Abstract: The glass transition temperature (Tg) of amorphous Polystyrene (PS) was systematically studied by differential scanning calorimetry (DSC), which is a common experimental method to investigate Tg, and a Molecular Dynamics simulation with the COMPASS II force field. Data from the DSC experiment and simulation was processed with the same method to obtain Tg values. The models at various degrees of polymerization (DP) can accurately simulate the experimental Tg value of PS after a process of gradually lowering the rate of temperature rise (?? gradually slowing/reducing the rate of temperature rise ??) The difference <s>of</s> in Tg between the simulation and experiment values is less than 3K. Additionally, the glass transition point of the model during the temperature rise and fall process is reproducible. A fitting equation based on the Tg values from low DP models can be used to predict Tg values of high DP polymer, which has practical value in the synthesis of polymers. (Or maybe: An equation based on the Tg values from low DP models can be fit to predict the Tg values of high DP polymers. This has great practical value in the synthesis of polymers)