Everyday Mathematics: The Lattice Method

[FateJHedgehog]

I've already seen Everyday math. I'm more fascinated by the way that first kid learned to write a 4.

[annglamgal]

I have heard the publisher discontinued use of the Lattice Method. I FRICKING HOPE SO!!!!!!!!!!!!!

[amandaleggett]

This is the most ridiculous thing I've ever seen in my life. I don't even have words...

[MADLmaan]

"multiplication strategies" my ass.

this curriculum is digging these kids' graves if they ever wish to pursue a future not only in mathematics, but in the sciences and finance as well. You need to be taught to walk before you can run. If the whole world had different strategies to walk, then we'd get a group of kids waddling, a group of kids on their toes jogging, and another group of kids doing the duck walk. You can't run with those. This is just plain stupid.

[Flexpicker]

This is absolutely ridiculous. I teach engineering at a university and have seen a huge degradation in math skills in recent years. For example, we use binary and hexadecimal based math systems, and the students don't get it because they don't understand that a column represents the base number raised to a power. This method doesn't even use columns per se!

[jfwatkins]

Wow, what gibberish: "strategies" for multiplication. My kid's going to Kumon. And yes, I have several math degrees.

[Voroable]

Actually that's not true the calculator is used in a game called or I think beat the brain. One students picks two-four cards and those cards are in a multiplication problem. One student uses a brain to figure the problem out while the other uses a calculator. Who ever gets the problem right first gets a point. Then they switch and the cycle again. There only three students per a game.

[Yetivision]

I love the lattice method. I don't know why, but I was never able to use long multiplication well, and the lattice method was just easier and faster for me.

[literacydude]

I think that lattice multiplication is only complicated to adults who learned the Standard US algorithm. My daughter learned lattice as part of EDM and loves it. It makes sense to her, she uses it proficiently, so what's the big deal?

There are many ways to add, subtract, multiply and divide. EDM teaches several, and kids have choice. Isn't that what life's about? Finding and using the way that makes sense?

[FateJHedgehog]

@literacydude But there really aren't "many ways to add subtract multiply and divide." Even the demonstrated method is doing roughly the same thing as standard column-based multiplication, just with an extra layer upon which nothing is gained and orderly number stacking is discarded. It even is forced to use carriage rules in the same way.

Does the student come to understand why the lattice works?

[jasanpahaf]

i would like to have one of those boards at home

[Wyldbutterfly028]

As a parent of a child who went through this math program. I will tell you it outright SUCKS!!!!

This method does nothing but confuse the kids and they are more apt to make mistakes and get the wrong answers. It's no wonder my daughter was failing math!

[almostdude1197jr]

i go to leighton

[recalcitrantmisanthr]

This is complicating something that should not be complicated. The students I've worked with have never had problems understanding the idea of 4 groups of 4.

Lets draw a shitload of weird triangles and pretend it makes the concept easier. Why don't we just start basic multiplication on a cartesian plane because, "It will open up their algebraic minds."

[rangeldogy2]

3:24 kid says dammit lol

Kids should try Lattic muliplication

Its very helpful I been using it ever since the 3rd grade

[Wadrob100]

He Does! Is'nt he supposed to get in trouble? (LOL)

[jtalarizadeh]

I'm going to list some times from the clip. 2:36, 2:42, 2:56, 2:59, 3:10, 3:16, 3:22. What do these have in common? They all show students doing math, that's right. Also, they're using calculators in every one of these scenes. YOU'RE BUILDING A CALCULATOR DEPENDENCY INTO EACH OF THESE KIDS BY USING THIS APPROACH.

[nda340]

@jtalarizadeh And the reason for why this math curriculum pushes calculators heavily is because the algorithms they use are too damned complicated to be useful.

[puppyloverforever1]

@jtalarizadeh

ummm you know they're play a game right?

[tromboneking87]

What can I say about Everyday Mathematics? hmm...

Maybe that it

DOESN'T WORK!!!!!!!!!!!!!!!!!!!!!!!!!!­!!!

I was able to survive through it relatively unscathed, but I know some high school students who CAN'T DO LONG DIVISION because E.M. screwed them up with all these RIDICULOUS methods.

Don't believe the propaganda, if you have even part of a brain cell in your head, and you have E.M. in your district, GET IT OUT! BEFORE IT RUINS YOUR KIDS!