学习目标
- I can count and write quantities up to 20.
- I can find the previous and next number.
- I can compare two small groups and explain my thinking.
Greek Primary Grade 1 / Mathematics / Αριθμοί και μοτίβα
Αριθμοί έως το 20
Αριθμοί έως το 20: structured theory, worked examples, answered practice, and a mastery checklist for Greek Primary Grade 1.
章节计划
学习、练习并检查进度
按顺序完成步骤，或直接跳到你需要的部分。
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已完成
预计主动学习时间
93 分钟
1. 理解
学习目标、核心概念与结构化理论。
打开 →2. 掌握方法
逐步说明的完整例题。
打开 →3. 练习
含提示与答案的分级练习。
打开 →4. 巩固
从基础到挑战的课后任务。
打开 →5. 检查
含计时、分值与解答的章节测试。
打开 →
进度只保存在当前浏览器中，不需要 AI credits。
核心概念与检查
- Count every object once.
- The last counting number tells how many there are.
- 20 is two tens. The numbers here stay between 0 and 20.
单元
核心理论
练习前按清晰顺序掌握本章核心概念。
Count and match
Point to one object for each number you say. Match the group to its numeral. Rearranging objects without adding or removing any does not change the count.
Before, after and between
On a number line, one step right adds one and one step left subtracts one. 12 is between 11 and 13.
Compare and combine groups
Compare two groups by pairing their objects. The group with objects left over is larger. When combining groups, count all their objects together.
Mathematics
例题讲解
逐步查看方法，并理解每一步为何成立。
Count a group
Count: ● ● ● ● ● ● ●.
- 1Point to each dot once, saying 1, 2, 3, 4, 5, 6, 7.
- 2The last number is 7, so write 7 for the count.
7
Combine two groups
You have 8 cards and receive 3 more. How many now?
- 1Start at 8 and count on three steps: 9, 10, 11.
- 2Check with two groups of objects, one of 8 and one of 3.
8 + 3 = 11
Αριθμοί έως το 20
含答案练习
八道分层练习，从基础熟练到考试应用。请先独立完成，再查看提示或答案。
基础熟练3 分钟
Count the dots: ● ● ●.
提示
Point to each dot once.
答案指南
3
基础熟练3 分钟
Which number comes immediately after 11?
提示
Move one step along the number line.
答案指南
12
应用3 分钟
Which number comes immediately before 10?
提示
Move one step back.
答案指南
9
应用3 分钟
Fill the gap: 7, __, 9.
提示
The numbers increase by one.
答案指南
8
推理3 分钟
Which is greater: 9 or 6?
提示
Find which number is further right on the number line.
答案指南
9
推理3 分钟
Order from smallest to greatest: 8, 3, 5.
提示
Find the smallest number first.
答案指南
3, 5, 8
考试题型3 分钟
You have 3 pencils and receive 2 more. How many now?
提示
Use objects or count on.
答案指南
3 + 2 = 5
考试题型3 分钟
You give away 2 of your 5 cards. How many remain?
提示
Remove the cards you gave away.
答案指南
5 − 2 = 3
常见错误
- Counting an object twice.
- Skipping a counting number.
- Thinking a more spread-out group has more objects.
掌握度检查
- I can count and write quantities up to 20.
- I can find the previous and next number.
- I can compare two small groups and explain my thinking.
Αριθμοί έως το 20
章节作业
六道不同作业，从基础到挑战，包含预计用时、提示和答案指南。
基础4 分钟
Count the dots: ● ● ● ●.
提示
Point to each dot once.
答案指南
4
基础4 分钟
Which number comes immediately after 12?
提示
Move one step along the number line.
答案指南
13
进阶4 分钟
Which number comes immediately before 11?
提示
Move one step back.
答案指南
10
进阶4 分钟
Fill the gap: 8, __, 10.
提示
The numbers increase by one.
答案指南
9
挑战4 分钟
Which is greater: 10 or 7?
提示
Find which number is further right on the number line.
答案指南
10
挑战4 分钟
Order from smallest to greatest: 9, 4, 6.
提示
Find the smallest number first.
答案指南
4, 6, 9
30 分钟 / 30 分
完整章节测试
带计时器、完整分值和参考答案的章节自测。
Use a pencil and objects. An adult may read the instructions. Take a break if needed; the time is a guide. Check answers at the end.
1. Count the dots: ● ● ● ● ●.
2 分答案指南
5
2. Which number comes immediately after 13?
3 分答案指南
14
3. Which number comes immediately before 12?
3 分答案指南
11
4. Fill the gap: 9, __, 11.
4 分答案指南
10
5. Which is greater: 11 or 8?
4 分答案指南
11
6. Order from smallest to greatest: 10, 5, 7.
4 分答案指南
5, 7, 10
7. You have 5 pencils and receive 4 more. How many now?
5 分答案指南
5 + 4 = 9
8. You give away 4 of your 9 cards. How many remain?
5 分答案指南
9 − 4 = 5
单元
官方来源与核验
课程参考来源；教学顺序请始终与学校和老师确认。
Mathematics
Greek Primary Grade 1: 数学与物理的结构化路线，包含章节、练习和下一步。
本章覆盖内容
结构跟随教材，用来帮助组织学习。
μέτρηση και αντιστοίχιση
ανάγνωση και γραφή αριθμών
σύγκριση και διάταξη
重点关注
通常容易出错或需要更多复习的部分。
I can count and write quantities up to 20.
I can find the previous and next number.
I can compare two small groups and explain my thinking.
来源、日常资料与学习资源
从教材、daily material、PDFs、videos 和 worked examples 开始。
Start from the official textbook or specification referenced on the subject page.
Use the notes and examples as support, not as a replacement for the official syllabus.
Check the current syllabus version before exam preparation.
按小主题练习
进入 full tests 前先做 targeted practice，让覆盖情况更清楚。
Count the dots: ● ● ●.
Which number comes immediately after 11?
Which number comes immediately before 10?
Fill the gap: 7, __, 9.
Which is greater: 9 or 6?
Order from smallest to greatest: 8, 3, 5.
You have 3 pencils and receive 2 more. How many now?
You give away 2 of your 5 cards. How many remain?
Mocks 与进度检查
如何衡量本章进度，以及何时加入综合 mock。
Start with untimed practice by subtopic.
Move to a short timed checkpoint only after completing the mastery checklist.
Record each error with the correct method and revisit it after 48 hours.
下一步
完成本章后该做什么，以及它如何连接到下一单元。
Complete the practice without support.
Explain the core method aloud in under two minutes.
Continue to the next chapter or request targeted tutor support.
说明：每学年的正式考试范围请始终以学校、老师和当前官方来源为准。