The One with Individual Tangent Practice

Image

I’m a bit more into individual practice, these days. A few years ago, I think I was more “all groupwork, all the time”, but I’m appreciating the fact that a decent culture of groupwork at our school helps support our kiddos when they’re working individually while also allowing them to spend time on what they need.

We’re still working through how reference angles are related to tangent ratios (without really calling them that – most kiddos are sticking with opposite and adjacent sides). Also trying to balance procedural work (especially with ratios) and conceptual thinking. Someone made a decision with this curriculum to round some of the tangent ratios to numbers that made it easier to solve for unknown numbers. While this may take away from the actual ratios (which are a calculator button push away, anyway), it did give a lot of kiddos access who weren’t familiar with solving ratios. Lots of struggle today and I’m hoping kiddos got something out of it.2017-03-10 17.39.31-2What do you notice? What do you wonder?

The One With Ratios

Image

We’re onto right triangle trigonometry. This year is flying by (and we’re a few days in at this point).

One of the many tricky things about right triangle trigonometry is that ratios are big. For classes where some kiddos don’t really know how to divide (let alone when it’s written as a fraction) while some (one) roll their eyes because the conceptual trigonometry we’re using has an approximation rather than the actual tangent ratio, the need to differentiate is real.

We took a bit of time today to talk about how to solve ratios. How many kiddos did we actually reach? Unclear, but the first step is important.

It’s fascinating for me to see the 4 papers I used (one per period) to show how to solve an with a variable in the denominator. By the end of the day, I’d realized that writing fewer steps cleanly is more important. I’ve also decided on “one finger if you understand, two fingers if you’d like to hear it again” is a nice way to hear what the class is thinking without being too judgemental (I’m so used to thumbs up/thumbs down, but that feels weighted).

We also did a reading guide where the kiddos used calculators to find the tangent ratio. It’s actually something that I remember relatively vividly from student teaching. I’m feeling a deep appreciation for this unit the third time I teach it.

Photo: 4 iterations of solving the same ratio

2017-03-09 17.20.39-1

What do you notice? What do you wonder?

Day 126: The One Where If You Fall Really Far, You Will Die

We’ve been experimenting with word problems as integrated math and English Language Development. Students read the problem, solve the problem and then do a write-up of the problem. It takes about a period to do 2-4 problems (for similarity, some groups finished one; most groups got to 3 for right triangle trigonometry). This might be different for mainstream classrooms, but I’d be curious. In contrast to activities like stations or explanation quizzes which encourage students to practice a range of problems, word problems feel like they allow students to dive deeper into problems.

It’s also curious to watch students mistake “the ground” in a word problem for “the line in the air”. I’m not sure if that’s a case of mis-translation or not reading the directions or something else.

Photo: If You Fall Really Far, You Will DieRight Triangle Trigonometry Word Problems

Gotta shout out Curriculum Partner on this one, since they wrote the word problems. Teaching 9th and 10th grade recently arrived English Language Learners is interesting. They often spend the first bit of time being confused – there’s a lot of English and the cognitive demands of high school in the US feel like they’re probably a bit higher than some of their prior schooling. But at some point during the year, they start to speak more English, they start to ask more questions, they start to write more things down.

This kiddo has recently become more active. I suspect it’s in part because we’re using scientific calculators (the non-fancy graphing ones for you following along at home) and this kiddo likes using them and feels successful at using them. At any rate, this kiddo was able to find the tangent of the reference angle (39.8) and label the unknown height of the tree as x. I think they also know that the shadow (the adjacent side of the triangle) was 60 feet, though their label is a bit misplaced.

Related, but unrelated: I completed my first Educational History Inventory. Don’t get too excited; it’s just a series of questions about how long a student has attended school for prior to arriving at our school. The vast majority of our students, especially those who arrive without documentation, do not bring transcripts or school records, so it’s hard for us to know if they’ve missed school in the past (something we call Interrupted Formal Education). To be fair, when I asked one student about their transcript, they said “well, my principal got shot, so…”. And I certainly wouldn’t count my transcript as the most important thing to bring with me from my home country.

At any rate, I’m actually finding that quite a few students who I suspected had Interrupted Formal Education have been in school continuously, which is leading me to think more about the transition to United States high schools and how we accelerate the growth in English process.