Mental Abacus Expert - By Lindbla Las och Skrivutveckling AB
Working with the Mental abacus app will help you develop your mental arithmetic skills using the abacus. The four different types of exercises also trains your concentration and working memory. Exercise 1 - Quick interpretation of abacus figures. This exercise will practice your ability to imagine and keep the images clear in your mind. It is a skill that is essential if you want to develop mental arithmetic with the so-called mental abacus technique. Exercise 2 - Quick perception of numbers. The aim of this exercise is to develop your ability to quickly percept numbers in numerical f
Mental Abacus Expert is a free educational mobile app By Lindbla Las och Skrivutveckling AB.It helps students in grades 3,4 practice the following standards 3.NBT.2,4.NBT.4,.
1. 3.NBT.2 : Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. (A range of algorithms may be used.).
2. 4.NBT.4 : Fluently add and subtract multi-digit whole numbers using the standard algorithm. (Grade 4 expectations in this domain are limited to whole numbers less than or equal to 1,000,000. A range of algorithms may be used.).
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