100 Board Counting Patterns vs Prime Factorization Deluxe

Ages 3-6. Numbers and Patterns naturally go hand in hand. This app will help your child to visualize the sequencing of numbers, thus helping them build a firm foundation for mathematics. Activities like this were used by Manel Wickremasinghe for her Montessori students in the 1970s. Of course, it was done with paper and colored pencils back then! Today Manel is happy to bring this concept for children to practice number sequencing via the iPad. It is one of our most popular math apps in the App Store! In this extension of the Hundred Board children can assemble patterns by identifying the correct numbers as they are heard aloud. The app is very easy to follow: 1. Choose an activity from the Home Page. 2. Touch the large speaker button to hear the next number required to assemble the pattern. 3. Touch that number on the Hundred Board and the colored square will transfer to the board to assemble the pattern. 4. Your score will appear at the bottom. Number pattern exercises help children reinforce their ability to identify numbers and their sequence. Activities like this are often created by Montessori teachers when children need help with these concepts. Many of you asked for this extension and we are happy to bring it to you! www.mobilemontessori.org

Use Prime Factorization Deluxe to explore and learn how to find the prime factorization of a composite number. Use the slider to select a number up to 100 for factorization. If a composite number is selected the app prompts the user to select a factor using the slider. If a prime is selected it is indicated using a red marker. Tap the question mark for a random number up to 100 to be automatically selected. Choose factors for the given number to build a factor tree. Continue until the prime factorization has been found. Learn how to find the Greatest Common Factor (GCF) and Least Common Multiple (LCM). For GCF, use the number line slider to select two numbers. The factors of the two numbers are show in a table and the greatest common factor is highlighted. For LCM, choose two numbers. The multiples of the number are shown in a table. The least common multiple is highlighted in the table. The first step in the process of prime factorization is to select a factor for the given number. If a factor is selected a branch on the tree is filled in. This process continues until all the composite numbers in the tree have been factored leaving only primes. Composite numbers are shown in blue and primes are highlighted in red. By examing the prime factorizations of two numbers students will notice that the Greatest Common Factor of two numbers is precisely the product of the primes that are common to both. Therefore it follows that the common multiples of any two numbers must contain each of the primes exactly once and that the least common multiple is the smallest number that occurs in both sets.