Rabbi Shimon Isaacson explores whether the Avot Melachot are learned out only from the building of the Mishkan, or also from Avodat HaKorbanot.

Rabbi Shimon Isaacson continues the introduction to Avos and Toldot, and introduces the critical concept of ‘melechet machshevet.’

Rabbi Shimon Isaacson focuses on the nature of Toldot Melacha.

Rabbi Shimon Isaacson continues with an analysis of whether a Toldah is an expansion of the Av or a new creation.

Rabbi Shimon Isaacson continues the explanation of “melacha sh’eino tzricha legufah”, and how it applies to the melacha of “Gozez” and the prohibition of cutting fingernails on Shabbat.

Rabbi Shimon Isaacson explains the laws of a woman who forgot to cut her nails before going to the mikvah on Friday night.

Rabbi Shimon Isaacson examines the practical aspects of the melacha of Gozez, including combing hair on Shabbat.

In his class on Hilchot Shabbat, Rabbi Shimon Isaacson explains what “Al M’nat” melachot are.

Rabbi Shimon Isaacson introduces the melachot of winnowing and selecting.

In this class on Hilchot Shabbat, Rabbi Shimon Isaacson defines the basic parameters of sorting, and defines what constitutes a mixture.

In this class on Hilchot Shabbat, Rabbi Shimon Isaacson analyzes the qualifications of a mixture, and examines the halacha when one has two different species of food items.

In this class on Hilchot Shabbat, Rabbi Shimon Isaacson continues his discussion of the laws of Borer on Shabbat, this week discussing the use of water filters on Shabbot, squeezing liquid out of cans, and peeling vegetables.

In this Hilchot Shabbat class, Rabbi Isaacson discusses the heter of separating food while one is eating, such as separating watermelon pits or fish bones.

Rabbi Isaacson continues to delve into different aspects of the melacha of Borer, defines what a Halacha calls a ‘kli’ and what Halacha calls a ‘yad’, and discusses common Borer questions.

Rabbi Shimon Isaacson finishes his discussion of the laws of Borer on Shabbat, and begins to introduce the melacha of Tochein, grinding.

Rabbi Shimon Isaacson continues his explanation of the laws of Tochein, grinding of food, on Shabbat.

Continuing his discussion of Hilchot Shabbat, Rabbi Shimon Isaacson concludes his explanation of the laws of Tochain, grinding, and begins an exploration of the laws of Dosh, threshing. He then discusses the laws pertaining to unintentional violation of Shabbos, and its applications.

Rabbi Shimon Isaacson continues his series on Hilchot Shabbat, discussing the Laws pertaining to the unintentional vioaltion of Shabbos.

In this class on Hilchot Shabbat, Rabbi Shimon Isaacson teaches the important Halachic concept of Psik Reisha D’ La Nicha Lei, an inevitable performance of a melacha that is not intended by the person doing the action. The class discusses the Machlokes between Tosfot and the Aruch about whether or not such actions are permissible on Shabbat.

In his final class of Hilchot Shabbat II, Rabbi Shimon Isaacson discusses the practical applications of the laws of Psik Reisha D’La Nicha Lei. Examples such as cutting letters on a cake, turning refrigerator lights on and off by opening and closing a refrigerator doors, and eating grapefruit are discussed in this shiur.