Source
DynaMath
DynaMath for grades 3–6 provides nonfiction and fiction-based exercises that help teach math, math articles that connect learning to the real world, and interactive activities to get kids excited about numbers!
Subscribe
<i>Titanoboa</i> The Titanoboa is a long-extinct snake that lived 58 million years ago. (Illustration by Gary Hanna)

Giants of the Past

Check out some ancient—and enormous—animals

Meet the Titanoboa (ty-TAN-oh- BOH-uh). As long as a school bus, this monster snake could swallow an entire crocodile! It lived 58 million years ago. Scientists found its remains in 2004 in the South American nation of Colombia. So far, it’s the largest snake ever found. A life-size model is at the National Museum of Natural History in Washington, D.C.

Titanoboa is long gone. But some of its distant family members live on. Researchers think the Titanoboa is related to much smaller snakes that live in the Americas today, like the boa constrictor and the anaconda.

Many smaller animals that exist today are related to giants of the past. Check out this skills sheet to learn more.

Multiplying 2-Digit by 1-Digit Numbers

Here’s one way to multiply a 2-digit number by a 1-digit number:
Stack the equation.
Break apart the 2-digit number into tens and ones.
Multiply each place by the 1-digit number.
The two results are called partial products. Add them to get the product of the original numbers.
Example: 43 x 5 = ?
43 = 40 + 3 (4 tens and 3 ones)

43 ← 40 + 3 
x 5                 
200 ← 5 x 40
+ 15 ← 5 x 3    
215               

This article originally appeared in the September 2012 issue of Dynamath. For more from Dynamath, click here.

  • Teacher Store
  • The Teacher Store  
    Salamanders

    Salamanders

    by Sara Swan Miller

    Another great title from Scholastic. Detailed description coming soon.

    $4.86 You save: 30%
    Paperback Book | Grades 5-6
    Add To Cart
    Educators Only
    Salamanders
    Grades 5-6 $4.86
    Add To Cart
  • Teacher Store
  • The Teacher Store  
    Nic Bishop Frogs

    Nic Bishop Frogs

    by Nic Bishop

    For the first- to third-grade set, frogs are an endless source of fascination, especially when looked at VERY close up. See tiny poison dart frogs and mammoth bullfrogs, as Nic Bishop's amazing images show the beauty and diversity of frogs from around the globe. And simple, engaging text conveys basic information about frogs -- as well as cool and quirky facts. Nic Bishop Frogs is a fun and informative tour through an exciting amphibian world.!

    Learn more about Nic Bishop .

    $12.59 You save: 30%
    Hardcovers | Grades PreK-3
    Add To Cart
    Educators Only
    Nic Bishop Frogs
    Grades PreK-3 $12.59
    Add To Cart
Privacy Policy
EMAIL THIS

* YOUR FIRST NAME ONLY

* FRIEND'S FIRST NAME ONLY

* FRIEND'S EMAIL ADDRESS

MESSAGE
Here's something interesting from Scholastic.com