要求做一个小学加减法教学软件，可以实现自动出题测试功能，就是纠结应该怎样实现加减法一步步的教学过程（比如7+8=15怎样以通俗易懂的形式一步步展示出来，让学生能够听懂的方式），求解答。

给你做了一个，采纳本回答留下email发给你

其他人如果也需要： https://download.csdn.net/download/caozhy/12244840

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Q1058393.Properties;

namespace Q1058393
{
    public partial class Form1 : Form
    {

        private int x = 0;

        private int y = 0;

        private int step = 0;

        private Image genPic(int a, int b)
        {
            Bitmap bmp = new Bitmap((a + b) * 60 + 10, 60);
            Graphics g = Graphics.FromImage(bmp);
            var graybmp = ToGray(Resources.Image1);
            for (int i = 0; i < a; i++)
            {
                g.DrawImage(Resources.Image1, i * 60, 5);
            }
            for (int i = 0; i < b; i++)
            {
                g.DrawImage(graybmp, (i + a) * 60, 5);
            }
            return bmp;
        }

        private Bitmap ToGray(Bitmap bmp)
        {
            Bitmap b1 = new Bitmap(bmp.Width, bmp.Height);
            for (int i = 0; i < bmp.Width; i++)
            {
                for (int j = 0; j < bmp.Height; j++)
                {
                    Color color = bmp.GetPixel(i, j);
                    int gray = (int)(color.R * 0.3 + color.G * 0.59 + color.B * 0.11);
                    Color newColor = Color.FromArgb(gray, gray, gray);
                    b1.SetPixel(i, j, newColor);
                }
            }
            return b1;
        }


        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Random rnd = new Random();
            y = 0;
            while (y == 0)
            {
                x = rnd.Next(1, 9);
                y = rnd.Next(-x + 1, 10 - x);
            }
            label1.Text = string.Format("{0}{1}{2}=?", x, y > 0 ? "+" : "", y);
            label1.Refresh();
            pictureBox1.Image = genPic(x, 0);
            pictureBox1.Refresh();
            if (y < 0)
                pictureBox2.Image = genPic(0, -y);
            else
                pictureBox2.Image = genPic(y, 0);
            pictureBox2.Refresh();
            pictureBox3.Image = genPic(0, 0);
            pictureBox3.Refresh();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {            
            if (y > 0)
                pictureBox3.Image = genPic(x + step, 0);
            else
                pictureBox3.Image = genPic(x - step, step);
            pictureBox3.Refresh();
            step++;
            if (y > 0 && step == y + 1) { timer1.Enabled = false; step = 0; }
            if (y < 0 && step == -y + 1 ) { timer1.Enabled = false; step = 0; }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            step = 0;
            timer1.Enabled = true;
            label1.Text = string.Format("{0}{1}{2}={3}", x, y > 0 ? "+" : "", y, x+y);
        }

    }
}

学加法减法，感觉初步就是数数。
个人有个观点：为什么人最长用的是10进制，是因为人有10个手指头，所以最原始的办法就是数指头呗
指头不够的话，就火柴杆呗
数数成习惯后，就成了基础记忆了，比如4+6，成人就不用数了，直接报10