Addition and subtraction within 1 and 10000: This paper mainly introduces the oral calculation method of two-digit addition and subtraction, the written calculation method of addition and subtraction of hundreds and tens digits, and the problem solving by estimation.
2. subtraction: master the calculation method of subtracting three digits from three digits, and calculate correctly. Understand the operation of abdication subtraction and master the calculation method of abdication subtraction.
3. Addition: Master the calculation method of three-digit plus three-digit discontinuous carry, which can correctly perform written calculation and improve the calculation ability. Understand and master the calculation rules of addition, be able to calculate addition skillfully.
4. Problem solving: Through the process of finding, asking and solving problems in real life, learn to add and subtract two steps to solve problems and know the role of brackets.
5. Estimation: Learn to estimate according to the specific situation, explain the estimation process, cultivate estimation consciousness and improve estimation ability.
Matters needing attention in drawing mind map
1, concise and clear: Mind maps should be concise and clear, and avoid too many words and patterns for better understanding and memory.
2. Clear levels: Mind maps should be organized according to the levels of themes, sub-themes and details for better understanding and memory.
3. Highlight key points: Mind mapping should highlight key points and highlight key contents with different colors or fonts, which is more intuitive and clear.
4. Update regularly: Mind maps should be updated regularly. With the increase and update of knowledge, mind map should be constantly improved and adjusted to better meet the learning needs.
5. Multi-angle thinking: Mind mapping should encourage multi-angle thinking, understand and remember knowledge points from different angles and levels, so as to better improve the learning effect.
6. Use graphics and colors as much as possible: An important feature of mind maps is the use of graphics and colors to express information. Graphics and colors can better attract people's attention and help them remember and understand.