SKU: 46889491756

Math Mammoth Place Value 1

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Description

Math Mammoth Place Value 1Math Mammoth Place Value 1 focuses on place value and two digit numbers and is primarily meant for first grade level math. When children count, they basically just learn numbers as some kind of continuum that goes on without end. With simple counting, your child might not catch on to the inherent structure of the number system. Our number system is based on the idea that if you have lots and lots of objects, the efficient way to count and denote them

Math Mammoth Place Value 1 focuses on place value and two-digit numbers and is primarily meant for first grade level math.

When children count, they basically just learn numbers as some kind of continuum that goes on without end. With simple counting, your child might not catch on to the inherent structure of the number system. Our number system is based on the idea that if you have lots and lots of objects, the efficient way to count and denote them is with groups of tens, hundreds, and thousands Ñ not individually.

The crucial point in understanding the concept of place value is therefore that a certain position represents a certain size group. The digit in each position tells us how many groups of that size there are. For example, in the number 2,381, an adult already knows that the 8 represents eight tens, and not just "8" and that the 3 represents three hundreds, and not just "3". The place of the digit tells us the size of the group, and the digit itself tells how many of that group.

The initial lessons of the book that introduce tens and ones use a 100-bead abacus extensively. This 100-bead abacus or school abacus simply contains ten beads on ten rods, for a total of 100 beads. It is not the special abacus used by the Chinese or the Japanese. Each bead simply represents one. The 100-bead abacus lets children both "see" the numbers and use their touch while making them.

You will need to purchase this school abacus separately, such as on Amazon, or make your own.

The abacus is used in the first lessons, but it is not the only model used in the book. We also use base-ten blocks as a visual representation of two-digit numbers. If you own a set of base-ten blocks (manipulatives), you can use them along with the visual exercises, if desired.

Moreover, we also use number lines and the 100-chart. Number lines help to visualize how numbers continue indefinitely and also relate to the concept of measuring. The 100-chart helps the child to be familiar with the numbers below 100 and find patterns in the number system.

While most of the lessons in the book focus on place value, students also practice adding and subtracting multiples of ten, and rounding numbers to the nearest ten. The two lessons near the end of the book about tally marks and graphs are real-life applications of two-digit numbers. The last lesson about regrouping can be challenging, thus is optional.

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SKU: 46889491756

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4.3 ★★★★★
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John J
Bozeman, US
★★★★★ 5
Way better than the M size for us
Like most people that have dogs I first went with the M size or Tennis ball size (about 2.5") chuckit for my 65-70 lbs Lab. After having that for a while and my dogs' evolution from liking to chase the ball to wanting to catch it, I started seeing how the M size could cause some life threating problems for my pup. I was on the fence for several weeks when I came across this option that included a 3" ultra ball as well as a 3" fuzzy tennis ball like ball. These balls can fly so much farther with less effort and my furry friend seeming to like them more than the 2.5 inch. It also seems to fit their mouth better allowing them to enjoy 'the game' (you lost by the way) much more. If you have a larger dog or your dog has a big mouth, please trust me when I say skip the 2.5" M size balls. You and your dog will haves much more fun with this 3" size
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Reviewed in the United States on December 10, 2024
D
Verified Purchase
Donna Sue
San Leandro, US
★★★★★ 5
Chuck it ball launcher
This is great! I have a blue healer that loves it. She will play fetch with the ball all day long. The launcher is easier on my shoulder. I can throw the ball twice as far and when she brings the ball back I can grab it with the launcher without touching a spit covered ball. Awesome buy!
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Reviewed in the United States on May 2, 2025
S
Stephanie Straub
Phoenix, US
★★★★★ 5
Good find
Chuckit products are great, and was glad to find this for the Pitties that I pet sit for
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Reviewed in the United States on October 23, 2025
S
Verified Purchase
S. McCartin
Whiting, US
★★★★★ 5
good for puppys young dogs, handle is separate, locking carabiners on both ends
Color: Orange, Size: 30FT
This is a good sturdy leash but probably wouldn't stand up to a conscientious chewer if your dogo has that bad habit. I like this one because the handle is separate so it can be used both as a tie out lead and as a regular lead. I also like the "locking" carabiners that should not open accidentally. I bought the thirty foot version because my new puppy loves to go outside then refuse to come back in or let me catch him when I need him to come inside (not catching me silly Hooman). When he's bigger I won't be so concerned about him being outside alone but since I'm in a sort of rural area, we have the occasional fox and hawk around when the sun goes down. Not too much to worry about in the way of pests but every puppy parent has an obligation to protect their young'un till they gain some wisdom. I have stairs in the back of the house, the way this is made I can attach it to the banister easily so I don't even need one of those tie stakes that bury in the ground. The price wasn't bad, the hardware looks sturdy and should last awhile. I just also bought the fifteen foot version, same quality as the thirty foot product I like that the handle is separate so it can be used as a tie down or a leash easily. My only big wish would perhaps be some more color choices, the orange is nice for visibility a yellow would be nice and then maybe some other colors like red/purple would be good as well. The thickness of the rope means that it doesn't "easily" get tangled into a giant knot. I leave the back door open and puppers can go in and out as he likes but he also sometimes runs around in the living room and thus far haven't had any large tangles to unwrap. He did manage to get the leash caught around a piece of tree branch that was on the ground (and complained loudly) but that was only because the branch was too heavy for him to drag the lead off of by himself. These leads are worth the money, I will likely buy a couple more to keep in the vehicle and other locations besides home.
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Reviewed in the United States on April 29, 2026
M
Verified Purchase
MyCountryStory
Cuba, US
★★★★★ 5
My Go-To Leash for Outdoor Fun and Training with My Lab Puppy
Color: Orange, Size: 15FT
The Joytale Long Leash, specifically the 15-foot model, is an exceptional product that has seamlessly integrated into the daily activities of our black lab puppy. Purchasing this leash has proven to be a decision that greatly benefits both our family and our energetic puppy, especially during our adventures in the backyard and while hiking. The vibrant orange color of the leash stands out, which is not just visually appealing but also significantly enhances safety by ensuring the leash remains highly visible. This feature is particularly useful in varied terrains and during low-light conditions, providing peace of mind that our puppy is always within sight and safe. The leash's design, featuring a removable padded handle, has been a game-changer for comfort. The padding ensures that our hands are protected from any strain or discomfort, even during those longer hikes or when our puppy gets a bit too excited and pulls. This thoughtful inclusion has made our outdoor adventures much more enjoyable, allowing us to focus on the fun and bonding with our puppy rather than any potential discomfort. Equally impressive is the double hook mechanism that the Joytale Long Leash boasts. This feature has instilled a great sense of security in us, knowing that the leash is securely attached to our puppy’s collar or harness. It's especially reassuring during hikes in more challenging terrains where a secure leash attachment is crucial for our puppy's safety. The 15-foot length of the leash has been perfect for our needs. It provides ample space for our black lab puppy to explore and play, whether we're in the backyard or adventuring through hiking trails. This length strikes a perfect balance, offering enough freedom for him to explore while still under our control, facilitating a safe and enjoyable environment for him to learn and grow. Durability is another aspect where the Joytale Long Leash shines. It has stood up to the rigorous daily activities of our puppy, showing no signs of wear and tear. This durability is not only a testament to the quality of the materials used but also to the thoughtful design that has gone into making this leash a reliable accessory for pet owners.
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Reviewed in the United States on April 7, 2024

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