Practice rounding decimals and learn about houseflies in the same worksheet! After rounding 12 decimals to the nearest place indicated, you can read some interesting facts about houseflies at the bottom of the page.

Challenge the deductive reasoning skills of young mathematicians with this series of number riddles. Requiring knowledge about place value, prime and composite numbers, factors, and multiples these puzzles are a great resource for...

Deepen young mathematicians' understanding of place value with a lesson on the subtraction algorithm. Presented with a series of multi-digit subtraction problems involving regrouping, learners use expanded notation to explain how the...

Engage your class in developing their understanding of place value with this simple hands-on activity. Presented with a multi-digit number, young mathematicians use the provided digit cards to create numbers in response to a series of...

When rounding the enrollment numbers for three school districts, Meghan gets the same number while Heather gets three different numbers. So who is right? Young mathematicians must use their knowledge of rounding to explain in writing...

Examine young mathematicians' ability to compare and order large numbers with this simple story problem exercise. Using a chart showing the number of people attending a movie over a four day span, learners must list the numbers from...

Expand young mathematicians' understanding of place value with this series of math activities. Focusing on making connections between standard and expanded notation, this resource offers an interactive website, a place value dice game,...

Develop young mathematicians' understanding of place value with this hands-on math activity. Working in pairs, learners take turns building two-digit numbers by rolling two ten-sided dice. Base ten blocks are then used to model the...

Young mathematicians concentrate on learning to fluently count. Following the rules of the classic game Memory, children take turns flipping over cards in order to find pairs of numbers that cross a decade (e.g. 29 and 30). For younger...

Young mathematicians spin their way to a deeper number sense with this fun, collaborative activity. Using two spinners, one with the numbers 0-9 and the other with the decades 00-90, pairs of students take turns building and comparing...

Math games, especially in the primary grades, provide great opportunities for developing the number sense of young mathematicians. Working in pairs with a deck of single-digit cards, students take turns drawing two cards and reading the...

Daily routines not only help to manage classrooms, they can also provide young scholars with rich opportunities for learning. This activity supports young learners in developing their number sense by counting up the school days on a...

Developing fluency with basic addition and subtraction is fundamental to the success of all young mathematicians. This four-day lesson series begins with learners using ten-frames and hundreds charts to recognize patterns when adding and...

Looking at large numbers can intimidate many young mathematicians. Use Zoe's place value machine to help learners understand the meaning behind each digit in a whole number. After learning about the ones, tens, and hundreds places,...

Teaching expanded notation is a great way to enhance young mathematicians' understanding of place value. This presentation explicitly describes the process, starting with the largest place value and working down, from left to right,...

Mia's been practicing for the hundred yard dash and wants to know if she's improving. Help order her race times from greatest to least while learning how to compare numbers using place value. A variety of additional examples are included...

What's that number worth? That's what learners will walk away knowing at the end of this lesson. A review of our number system and base ten blocks is used in conjunction with a place value chart to remind the viewer of these tools. Arrow...

What a great way to present multiple-digit addition! Sal adds the numbers 2803 and 1443. He draws a chart representing each of the four place values from the problem and then draws "place value buckets” to represent what each number...

Comparing decimals can be easy. Watch and learn how to line up four decimal numbers vertically and then starting from the left, compare each number in each place value to determine which is largest and which is smallest. This procedure...

Here is a great real life example of when a person would need to compare numbers. Each of the four examples explains how to compare the numbers beginning with the number at the left and compare the value of each digit. The examples begin...

Watch Allison write the number 213 in expanded form. She explains how each number is multiplied by a 1, 10, or 100 and how it relates to place value. This clip is short and fast, but could be useful for learners needing an expanded form...

Sal reinforces the concepts taught in the first video on Singapore four-digit addition with a series of addition problems. The video would be a great homework assignment. Ask your class to view it at home and write a paragraph on the...

Third graders use the numbers zero, four, and five to make as many three-digit numbers as they can. Sal explains that to make the largest number possible, one would need to put the largest number in the highest place. Each step and Sal's...

Using three-digit numbers, this video discusses the process used to add and subtract with regrouping. The instructor also focuses on how to determine when and when not to regroup. It describes exactly what is happening when a problem...