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12

Try Pesachim 109a-b where the Gemara (and more elaborately in Rashi and Tosfot) tries to work out the volume of a Reviit in Etzba^3 based on its knowledge of the volume of a Mikva in Amah^3 (ie lots of basic algebra and unit conversion).


11

This is from the Babylonian Talmud. Shabbat 135b says that we don't break Shabbas to save the life of a baby born in its eighth month of gestation. The idea was that there are 7-month babies and 9-month babies, and an 8-month baby was either an early 9-monther or a late 7-monther and if it were an early 9-monther, it probably wasn't going to make it. ...


10

First, you should remember how bad infant mortality was in those days. So what it says about how some infants were considered not viable (and thus could not be touched on Shabbos), no longer applies today when infant mortality is much lower. You should talk about the change in infant mortality with your students. The way you phrased your question implies ...


10

In Hakirah vol. 14, they published an article called "'Learning' Mathematics." Right now, only the first two pages are available online to non-subscribers, but they provide a few examples already. The full article will become visible when the next issue of Hakirah is published. (I personally don't subscribe to Hakirah so I can't tell you what's in the ...


10

When teaching Kodesh at Yeshivas Toras Emes (High School) in Johannesburg almost 30 years ago, the Menahel HaRav Gedalia Sternstein שליט"א told me that the Rov - Rabbi Salzer זצ"ל - told him that it's best if the students learn about these things from the Gemora - BiKedusha uVeTaharo. As relevant topics came up, we were to explain them is as much detail as ...


6

I remember doing the gemara on Sukkah 8a in high school while I was also in a geometry class in the afternoons. It's pretty basic high-school geometry stuff. Squares and circles. It's the Tosfos there, though, that go all out. It's particularly ingenious how Tosfos (bottom of the page) demonstrates that the ratio of the diagonal of a square to its side ...


5

You might want to show him Rambam Hil. Kiddush HaChodesh and the diagrams in the back, as well as Chazon Ish on Kiddush HaChodesh and the attendant illustrations. At the very end the Chazon Ish even includes a handy sine table! In R' Chaim Kanievsky's Shekel HaKodesh there is an appendix that explains the trigonometric underpinnings of the numbers given by ...


4

The Shulchan Aruch (OC 657) rules that if a child knows how to wave the 4 species appropriately, his father must, because of the obligation of Chinuch -- education, arrange for him to have a set. The Biur Halacha (sv Katan) notes that this is true even if they are unable to recite the proper blessing. In sv Kedei, he says that "it is obvious that the set ...


3

When I was telling the story to my son when he was younger (he's still pretty young, so even younger), I used the following euphemisms: King Ahashverosh wanted to show everyone how pretty Vashti was, but she didn't want everyone looking at her so she said no, and he got angry and sent her away. Bigthan and Teresh wanted to hurt the king, and when Mordechai ...


3

As a person who has had numerous seders with young children I would highly recommend they be given the opportunity to act out the yeztiah story if they are so inclined; perhaps during Shulchan Orech. Also, maybe for the 10 plagues you can use different manipulatives to show each of them (or act them out). If a child has a D'var Torah they learned in ...


2

Technically, one cannot receive money for teaching Torah: "ראה למדתי אתכם חוקים ומשפטים כאשר צוני ה' אלקי" – מה אני לימדתי אתכם בחינם, אף אתם כשתלמדו זה לזה – בחינם. A teacher was able to take money for one of two reasons - as payment for watching kids, or as "sechar batala" for not doing something else during that time. Once there's a heter to ...


2

The last question first, the Gemara in Beitza 16a says that the more one spends for Shabbos & Yom Tov and for expenses of Talmud Torah for his children the more he receives [from Heaven]. I would suggest to learn the first chapter of Hilchos Talmud Torah in Shulchan Aruch Horav, from Halacha 2-9 he elaborates on the obligation of the father, ...


2

My Ba'al Mesorah (my Rav, R' Mordechai Friedman) would offer his children candy for every question that they could come up with. I don't know how well this would work with his children today, as they are mostly grown. He used the example of a politician engaging a reporter at a press conference. The reporter asks a question that he has been itching to ask ...


2

How can it be stealing? Stealing requires that the thief walk away with something to which he is not entitled. All the kid gets here is free time. The cost to the parents is the same, so he can't be stealing their money. He is, on the other hand, wasting their money. It seems analogous to taking the dinner he was served and throwing it out. It isn't ...


2

One source that comes to mind is the Yerushalmi in Sotah 3:4 (folio 15b in most versions): אמר בן עזאי חייב אדם ללמד את בתו תורה שאם תשתה תדע שהזכות תולה לה ר' אליעזר אומר המלמד את בתו תורה מלמדה תפלות Ben Azai said that one must teach one's daughter Torah [ שבעל פה ] so that if she drinks [Sotah waters - and doesn't die immediately even though ...


2

Just one source - but I like it! The Rebbetzin's Husband blog comments on the importance of a relationship with the Rebbe I am not among those who want the junior high Rebbe to stick to the curriculum. Sure, I will be frustrated when the curriculum is not completed, and I will want the kids to know much more tochen (content) than they will ...


1

I'm assuming this question is based on the assumption that you don't want to have to explain murder to your child by exposing him to such violent imagery, rather than a question about how to do exactly that. (One does not have to venture too far into the Torah to find murder, so the time to explain these things comes quite soon. Most schools I'm familiar ...


1

I would be interested to know if their was any actual halachic literature on the subject but it seems to me the answer is pretty clearly no. Parents pay for a service, that their children obtain an education, not for a continuous task to be preformed like an assembly line. In other words every moment in the classroom does not translate into a moment of ...



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